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psychojs/docs/index.html
Alain Pitiot a0181b70ce DOC: updated the headers and the docs
2024-07-29 13:58:08 +02:00

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<title>Home - PsychoJS API</title>
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<h2><a href="index.html">Home</a></h2><h2><a href="https://psychopy.org" target="_blank" class="menu-item" id="website_link" >Project Website</a></h2><h2><a href="https://discourse.psychopy.org/" target="_blank" class="menu-item" id="forum_link" >Forum</a></h2><h2><a href="https://github.com/psychopy/psychojs" target="_blank" class="menu-item" id="github_link" >Github</a></h2><h3>Modules</h3><ul><li><a href="module-core.html">core</a></li><li><a href="module-data.html">data</a></li><li><a href="module-sound.html">sound</a></li><li><a href="module-util.html">util</a><ul class='methods'><li data-type='method'><a href="module-util.html#~_match">_match</a></li></ul></li><li></li><li><a href="module-visual.html">visual</a></li></ul><h3>Classes</h3><ul><li><a href="AudioClip.html">AudioClip</a><ul class='methods'><li data-type='method'><a href="AudioClip.html#_base64ArrayBuffer">_base64ArrayBuffer</a></li><li data-type='method'><a href="AudioClip.html#_decodeAudio">_decodeAudio</a></li><li data-type='method'><a href="AudioClip.html#_GoogleTranscribe">_GoogleTranscribe</a></li><li data-type='method'><a href="AudioClip.html#download">download</a></li><li data-type='method'><a href="AudioClip.html#getDuration">getDuration</a></li><li data-type='method'><a href="AudioClip.html#setVolume">setVolume</a></li><li data-type='method'><a href="AudioClip.html#startPlayback">startPlayback</a></li><li data-type='method'><a href="AudioClip.html#stopPlayback">stopPlayback</a></li><li data-type='method'><a href="AudioClip.html#transcribe">transcribe</a></li><li data-type='method'><a href="AudioClip.html#upload">upload</a></li></ul></li><li><a href="AudioClipPlayer.html">AudioClipPlayer</a><ul class='methods'><li data-type='method'><a href="AudioClipPlayer.html#getDuration">getDuration</a></li><li data-type='method'><a href="AudioClipPlayer.html#play">play</a></li><li data-type='method'><a href="AudioClipPlayer.html#setAudioClip">setAudioClip</a></li><li data-type='method'><a href="AudioClipPlayer.html#setDuration">setDuration</a></li><li data-type='method'><a href="AudioClipPlayer.html#setLoops">setLoops</a></li><li data-type='method'><a href="AudioClipPlayer.html#setVolume">setVolume</a></li><li data-type='method'><a href="AudioClipPlayer.html#stop">stop</a></li></ul></li><li><a href="BuilderKeyResponse.html">BuilderKeyResponse</a></li><li><a href="ButtonStim.html">ButtonStim</a><ul class='methods'><li data-type='method'><a href="ButtonStim.html#_addEventListeners">_addEventListeners</a></li><li data-type='method'><a href="ButtonStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="ButtonStim.html#_getDefaultLetterHeight">_getDefaultLetterHeight</a></li><li data-type='method'><a href="ButtonStim.html#_getTextInputOptions">_getTextInputOptions</a></li><li data-type='method'><a href="ButtonStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="ButtonStim.html#clear">clear</a></li><li data-type='method'><a href="ButtonStim.html#getText">getText</a></li><li data-type='method'><a href="ButtonStim.html#reset">reset</a></li><li data-type='method'><a href="ButtonStim.html#setAlignment">setAlignment</a></li><li data-type='method'><a href="ButtonStim.html#setBorderColor">setBorderColor</a></li><li data-type='method'><a href="ButtonStim.html#setColor">setColor</a></li><li data-type='method'><a href="ButtonStim.html#setFillColor">setFillColor</a></li><li data-type='method'><a href="ButtonStim.html#setFitToContent">setFitToContent</a></li><li data-type='method'><a href="ButtonStim.html#setFont">setFont</a></li><li data-type='method'><a href="ButtonStim.html#setLanguageStyle">setLanguageStyle</a></li><li data-type='method'><a href="ButtonStim.html#setLetterHeight">setLetterHeight</a></li><li data-type='method'><a href="ButtonStim.html#setSize">setSize</a></li><li data-type='method'><a href="ButtonStim.html#setText">setText</a></li></ul></li><li><a href="Clock.html">Clock</a><ul class='methods'><li data-type='method'><a href="Clock.html#add">add</a></li><li data-type='method'><a href="Clock.html#getLastResetTime">getLastResetTime</a></li><li data-type='method'><a href="Clock.html#getTime">getTime</a></li><li data-type='method'><a href="Clock.html#reset">reset</a></li></ul></li><li><a href="Color.html">Color</a><ul class='methods'><li data-type='method'><a href="Color.html#toString">toString</a></li></ul></li><li><a href="CountdownTimer.html">CountdownTimer</a><ul class='methods'><li data-type='method'><a href="CountdownTimer.html#add">add</a></li><li data-type='method'><a href="CountdownTimer.html#getLastResetTime">getLastResetTime</a></li><li data-type='method'><a href="CountdownTimer.html#getTime">getTime</a></li><li data-type='method'><a href="CountdownTimer.html#reset">reset</a></li></ul></li><li><a href="EventEmitter.html">EventEmitter</a><ul class='methods'><li data-type='method'><a href="EventEmitter.html#emit">emit</a></li><li data-type='method'><a href="EventEmitter.html#off">off</a></li><li data-type='method'><a href="EventEmitter.html#on">on</a></li><li data-type='method'><a href="EventEmitter.html#once">once</a></li></ul></li><li><a href="EventManager.html">EventManager</a><ul class='methods'><li data-type='method'><a href="EventManager.html#_addKeyListeners">_addKeyListeners</a></li><li data-type='method'><a href="EventManager.html#addMouseListeners">addMouseListeners</a></li><li data-type='method'><a href="EventManager.html#clearEvents">clearEvents</a></li><li data-type='method'><a href="EventManager.html#clearKeys">clearKeys</a></li><li data-type='method'><a href="EventManager.html#getKeys">getKeys</a></li><li data-type='method'><a href="EventManager.html#getMouseInfo">getMouseInfo</a></li><li data-type='method'><a href="EventManager.html#resetMoveClock">resetMoveClock</a></li><li data-type='method'><a href="EventManager.html#startMoveClock">startMoveClock</a></li><li data-type='method'><a href="EventManager.html#stopMoveClock">stopMoveClock</a></li></ul></li><li><a href="ExperimentHandler.html">ExperimentHandler</a><ul class='methods'><li data-type='method'><a href="ExperimentHandler.html#addData">addData</a></li><li data-type='method'><a href="ExperimentHandler.html#addLoop">addLoop</a></li><li data-type='method'><a href="ExperimentHandler.html#getResultAsCsv">getResultAsCsv</a></li><li data-type='method'><a href="ExperimentHandler.html#isEntryEmpty">isEntryEmpty</a></li><li data-type='method'><a href="ExperimentHandler.html#nextEntry">nextEntry</a></li><li data-type='method'><a href="ExperimentHandler.html#removeLoop">removeLoop</a></li><li data-type='method'><a href="ExperimentHandler.html#save">save</a></li></ul></li><li><a href="FaceDetector.html">FaceDetector</a><ul class='methods'><li data-type='method'><a href="FaceDetector.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="FaceDetector.html#_initFaceApi">_initFaceApi</a></li><li data-type='method'><a href="FaceDetector.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="FaceDetector.html#isReady">isReady</a></li><li data-type='method'><a href="FaceDetector.html#setInput">setInput</a></li><li data-type='method'><a href="FaceDetector.html#start">start</a></li><li data-type='method'><a href="FaceDetector.html#stop">stop</a></li></ul></li><li><a href="Form.html">Form</a><ul class='methods'><li data-type='method'><a href="Form.html#_anchorTextToNum">_anchorTextToNum</a></li><li data-type='method'><a href="Form.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="Form.html#_getBoundingBox_px">_getBoundingBox_px</a></li><li data-type='method'><a href="Form.html#_importItems">_importItems</a></li><li data-type='method'><a href="Form.html#_onChange">_onChange</a></li><li data-type='method'><a href="Form.html#_processItems">_processItems</a></li><li data-type='method'><a href="Form.html#_sanitizeItems">_sanitizeItems</a></li><li data-type='method'><a href="Form.html#_setupStimuli">_setupStimuli</a></li><li data-type='method'><a href="Form.html#_updateDecorations">_updateDecorations</a></li><li data-type='method'><a href="Form.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Form.html#_updateVisibleStimuli">_updateVisibleStimuli</a></li><li data-type='method'><a href="Form.html#addDataToExp">addDataToExp</a></li><li data-type='method'><a href="Form.html#contains">contains</a></li><li data-type='method'><a href="Form.html#draw">draw</a></li><li data-type='method'><a href="Form.html#formComplete">formComplete</a></li><li data-type='method'><a href="Form.html#getData">getData</a></li><li data-type='method'><a href="Form.html#hide">hide</a></li><li data-type='method'><a href="Form.html#refresh">refresh</a></li><li data-type='method'><a href="Form.html#release">release</a></li><li data-type='method'><a href="Form.html#reset">reset</a></li><li data-type='method'><a href="Form.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="Form.html#setAutoDraw">setAutoDraw</a></li><li data-type='method'><a href="Form.html#setDepth">setDepth</a></li><li data-type='method'><a href="Form.html#setOri">setOri</a></li><li data-type='method'><a href="Form.html#setPos">setPos</a></li><li data-type='method'><a href="Form.html#setSize">setSize</a></li></ul></li><li><a href="GratingStim.html">GratingStim</a><ul class='methods'><li data-type='method'><a href="GratingStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="GratingStim.html#_getDisplaySize">_getDisplaySize</a></li><li data-type='method'><a href="GratingStim.html#_getPixiMeshFromPredefinedShaders">_getPixiMeshFromPredefinedShaders</a></li><li data-type='method'><a href="GratingStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="GratingStim.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="GratingStim.html#setBlendmode">setBlendmode</a></li><li data-type='method'><a href="GratingStim.html#setColor">setColor</a></li><li data-type='method'><a href="GratingStim.html#setColorSpace">setColorSpace</a></li><li data-type='method'><a href="GratingStim.html#setInterpolate">setInterpolate</a></li><li data-type='method'><a href="GratingStim.html#setMask">setMask</a></li><li data-type='method'><a href="GratingStim.html#setOpacity">setOpacity</a></li><li data-type='method'><a href="GratingStim.html#setPhase">setPhase</a></li><li data-type='method'><a href="GratingStim.html#setSF">setSF</a></li><li data-type='method'><a href="GratingStim.html#setTex">setTex</a></li></ul></li><li><a href="GUI.html">GUI</a><ul class='methods'><li data-type='method'><a href="GUI.html#_onCancelExperiment">_onCancelExperiment</a></li><li data-type='method'><a href="GUI.html#_onResourceEvents">_onResourceEvents</a></li><li data-type='method'><a href="GUI.html#_onStartExperiment">_onStartExperiment</a></li><li data-type='method'><a href="GUI.html#_setProgressMessage">_setProgressMessage</a></li><li data-type='method'><a href="GUI.html#_updateDialog">_updateDialog</a></li><li data-type='method'><a href="GUI.html#_updateProgressBar">_updateProgressBar</a></li><li data-type='method'><a href="GUI.html#_userFriendlyError">_userFriendlyError</a></li><li data-type='method'><a href="GUI.html#closeDialog">closeDialog</a></li><li data-type='method'><a href="GUI.html#dialog">dialog</a></li><li data-type='method'><a href="GUI.html#DlgFromDict">DlgFromDict</a></li><li data-type='method'><a href="GUI.html#finishDialog">finishDialog</a></li></ul></li><li><a href="ImageStim.html">ImageStim</a><ul class='methods'><li data-type='method'><a href="ImageStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="ImageStim.html#_getDisplaySize">_getDisplaySize</a></li><li data-type='method'><a href="ImageStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="ImageStim.html#setImage">setImage</a></li><li data-type='method'><a href="ImageStim.html#setInterpolate">setInterpolate</a></li><li data-type='method'><a href="ImageStim.html#setMask">setMask</a></li></ul></li><li><a href="Keyboard.html">Keyboard</a><ul class='methods'><li data-type='method'><a href="Keyboard.html#_addKeyListeners">_addKeyListeners</a></li><li data-type='method'><a href="Keyboard.html#clearEvents">clearEvents</a></li><li data-type='method'><a href="Keyboard.html#getEvents">getEvents</a></li><li data-type='method'><a href="Keyboard.html#getKeys">getKeys</a></li><li data-type='method'><a href="Keyboard.html#start">start</a></li><li data-type='method'><a href="Keyboard.html#stop">stop</a></li></ul></li><li><a href="KeyPress.html">KeyPress</a></li><li><a href="Logger.html">Logger</a><ul class='methods'><li data-type='method'><a href="Logger.html#_customConsoleLayout">_customConsoleLayout</a></li><li data-type='method'><a href="Logger.html#_getValue">_getValue</a></li><li data-type='method'><a href="Logger.html#_throttle">_throttle</a></li><li data-type='method'><a href="Logger.html#data">data</a></li><li data-type='method'><a href="Logger.html#exp">exp</a></li><li data-type='method'><a href="Logger.html#flush">flush</a></li><li data-type='method'><a href="Logger.html#log">log</a></li><li data-type='method'><a href="Logger.html#setLevel">setLevel</a></li></ul></li><li><a href="MaxDiffMatrix.html">MaxDiffMatrix</a></li><li><a href="Microphone.html">Microphone</a><ul class='methods'><li data-type='method'><a href="Microphone.html#_onChange">_onChange</a></li><li data-type='method'><a href="Microphone.html#_prepareRecording">_prepareRecording</a></li><li data-type='method'><a href="Microphone.html#download">download</a></li><li data-type='method'><a href="Microphone.html#flush">flush</a></li><li data-type='method'><a href="Microphone.html#getRecording">getRecording</a></li><li data-type='method'><a href="Microphone.html#pause">pause</a></li><li data-type='method'><a href="Microphone.html#resume">resume</a></li><li data-type='method'><a href="Microphone.html#start">start</a></li><li data-type='method'><a href="Microphone.html#stop">stop</a></li><li data-type='method'><a href="Microphone.html#upload">upload</a></li></ul></li><li><a href="MinimalStim.html">MinimalStim</a><ul class='methods'><li data-type='method'><a href="MinimalStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="MinimalStim.html#contains">contains</a></li><li data-type='method'><a href="MinimalStim.html#draw">draw</a></li><li data-type='method'><a href="MinimalStim.html#hide">hide</a></li><li data-type='method'><a href="MinimalStim.html#release">release</a></li><li data-type='method'><a href="MinimalStim.html#setAutoDraw">setAutoDraw</a></li></ul></li><li><a href="module-core.PsychoJS.html">PsychoJS</a><ul class='methods'><li data-type='method'><a href="module-core.PsychoJS.html#_captureErrors">_captureErrors</a></li><li data-type='method'><a href="module-core.PsychoJS.html#_configure">_configure</a></li><li data-type='method'><a href="module-core.PsychoJS.html#_getParticipantIPInfo">_getParticipantIPInfo</a></li><li data-type='method'><a href="module-core.PsychoJS.html#_makeStatusTopLevel">_makeStatusTopLevel</a></li><li data-type='method'><a href="module-core.PsychoJS.html#getEnvironment">getEnvironment</a></li><li data-type='method'><a href="module-core.PsychoJS.html#importAttributes">importAttributes</a></li><li data-type='method'><a href="module-core.PsychoJS.html#openWindow">openWindow</a></li><li data-type='method'><a href="module-core.PsychoJS.html#quit">quit</a></li><li data-type='method'><a href="module-core.PsychoJS.html#schedule">schedule</a></li><li data-type='method'><a href="module-core.PsychoJS.html#scheduleCondition">scheduleCondition</a></li><li data-type='method'><a href="module-core.PsychoJS.html#setRedirectUrls">setRedirectUrls</a></li><li data-type='method'><a href="module-core.PsychoJS.html#start">start</a></li><li data-type='method'><a href="module-core.PsychoJS.html#waitForResources">waitForResources</a></li></ul></li><li><a href="module-data.TrialHandler.html">TrialHandler</a><ul class='methods'><li data-type='method'><a href="module-data.TrialHandler.html#_prepareSequence">_prepareSequence</a></li><li data-type='method'><a href="module-data.TrialHandler.html#_prepareTrialList">_prepareTrialList</a></li><li data-type='method'><a href="module-data.TrialHandler.html#addData">addData</a></li><li data-type='method'><a href="module-data.TrialHandler.html#forEach">forEach</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getAttributes">getAttributes</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getCurrentTrial">getCurrentTrial</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getEarlierTrial">getEarlierTrial</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getFutureTrial">getFutureTrial</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getSnapshot">getSnapshot</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getTrial">getTrial</a></li><li data-type='method'><a href="module-data.TrialHandler.html#getTrialIndex">getTrialIndex</a></li><li data-type='method'><a href="module-data.TrialHandler.html#next">next</a></li><li data-type='method'><a href="module-data.TrialHandler.html#setSeed">setSeed</a></li><li data-type='method'><a href="module-data.TrialHandler.html#setTrialIndex">setTrialIndex</a></li><li data-type='method'><a href="module-data.TrialHandler.html#Symbol.iterator">Symbol.iterator</a></li></ul></li><li><a href="module-hardware.Camera.html">Camera</a><ul class='methods'><li data-type='method'><a href="module-hardware.Camera.html#_onChange">_onChange</a></li><li data-type='method'><a href="module-hardware.Camera.html#_prepareRecording">_prepareRecording</a></li><li data-type='method'><a href="module-hardware.Camera.html#_upload">_upload</a></li><li data-type='method'><a href="module-hardware.Camera.html#authorize">authorize</a></li><li data-type='method'><a href="module-hardware.Camera.html#close">close</a></li><li data-type='method'><a href="module-hardware.Camera.html#flush">flush</a></li><li data-type='method'><a href="module-hardware.Camera.html#getRecording">getRecording</a></li><li data-type='method'><a href="module-hardware.Camera.html#getStream">getStream</a></li><li data-type='method'><a href="module-hardware.Camera.html#getVideo">getVideo</a></li><li data-type='method'><a href="module-hardware.Camera.html#isReady">isReady</a></li><li data-type='method'><a href="module-hardware.Camera.html#open">open</a></li><li data-type='method'><a href="module-hardware.Camera.html#pause">pause</a></li><li data-type='method'><a href="module-hardware.Camera.html#record">record</a></li><li data-type='method'><a href="module-hardware.Camera.html#resume">resume</a></li><li data-type='method'><a href="module-hardware.Camera.html#stop">stop</a></li></ul></li><li><a href="module-sound.Sound.html">Sound</a><ul class='methods'><li data-type='method'><a href="module-sound.Sound.html#_getPlayer">_getPlayer</a></li><li data-type='method'><a href="module-sound.Sound.html#getDuration">getDuration</a></li><li data-type='method'><a href="module-sound.Sound.html#play">play</a></li><li data-type='method'><a href="module-sound.Sound.html#setLoops">setLoops</a></li><li data-type='method'><a href="module-sound.Sound.html#setSecs">setSecs</a></li><li data-type='method'><a href="module-sound.Sound.html#setSound">setSound</a></li><li data-type='method'><a href="module-sound.Sound.html#setValue">setValue</a></li><li data-type='method'><a href="module-sound.Sound.html#setVolume">setVolume</a></li><li data-type='method'><a href="module-sound.Sound.html#stop">stop</a></li></ul></li><li><a href="module-util.PsychObject.html">PsychObject</a><ul class='methods'><li data-type='method'><a href="module-util.PsychObject.html#_addAttribute">_addAttribute</a></li><li data-type='method'><a href="module-util.PsychObject.html#_setAttribute">_setAttribute</a></li><li data-type='method'><a href="module-util.PsychObject.html#emit">emit</a></li><li data-type='method'><a href="module-util.PsychObject.html#off">off</a></li><li data-type='method'><a href="module-util.PsychObject.html#on">on</a></li><li data-type='method'><a href="module-util.PsychObject.html#once">once</a></li><li data-type='method'><a href="module-util.PsychObject.html#toString">toString</a></li></ul></li><li><a href="module-visual.VisualStim.html">VisualStim</a><ul class='methods'><li data-type='method'><a href="module-visual.VisualStim.html#_anchorTextToNum">_anchorTextToNum</a></li><li data-type='method'><a href="module-visual.VisualStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="module-visual.VisualStim.html#_getBoundingBox_px">_getBoundingBox_px</a></li><li data-type='method'><a href="module-visual.VisualStim.html#_onChange">_onChange</a></li><li data-type='method'><a href="module-visual.VisualStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="module-visual.VisualStim.html#contains">contains</a></li><li data-type='method'><a href="module-visual.VisualStim.html#draw">draw</a></li><li data-type='method'><a href="module-visual.VisualStim.html#hide">hide</a></li><li data-type='method'><a href="module-visual.VisualStim.html#refresh">refresh</a></li><li data-type='method'><a href="module-visual.VisualStim.html#release">release</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setAutoDraw">setAutoDraw</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setDepth">setDepth</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setOri">setOri</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setPos">setPos</a></li><li data-type='method'><a href="module-visual.VisualStim.html#setSize">setSize</a></li></ul></li><li><a href="MonotonicClock.html">MonotonicClock</a><ul class='methods'><li data-type='method'><a href="MonotonicClock.html#getLastResetTime">getLastResetTime</a></li><li data-type='method'><a href="MonotonicClock.html#getTime">getTime</a></li></ul></li><li><a href="Mouse.html">Mouse</a><ul class='methods'><li data-type='method'><a href="Mouse.html#clickReset">clickReset</a></li><li data-type='method'><a href="Mouse.html#getPos">getPos</a></li><li data-type='method'><a href="Mouse.html#getPressed">getPressed</a></li><li data-type='method'><a href="Mouse.html#getRel">getRel</a></li><li data-type='method'><a href="Mouse.html#getWheelRel">getWheelRel</a></li><li data-type='method'><a href="Mouse.html#isPressedIn">isPressedIn</a></li><li data-type='method'><a href="Mouse.html#mouseMoved">mouseMoved</a></li><li data-type='method'><a href="Mouse.html#mouseMoveTime">mouseMoveTime</a></li></ul></li><li><a href="MovieStim.html">MovieStim</a><ul class='methods'><li data-type='method'><a href="MovieStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="MovieStim.html#_getDisplaySize">_getDisplaySize</a></li><li data-type='method'><a href="MovieStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="MovieStim.html#pause">pause</a></li><li data-type='method'><a href="MovieStim.html#play">play</a></li><li data-type='method'><a href="MovieStim.html#reset">reset</a></li><li data-type='method'><a href="MovieStim.html#seek">seek</a></li><li data-type='method'><a href="MovieStim.html#setMovie">setMovie</a></li><li data-type='method'><a href="MovieStim.html#stop">stop</a></li></ul></li><li><a href="MultiStairHandler.html">MultiStairHandler</a><ul class='methods'><li data-type='method'><a href="MultiStairHandler.html#_nextTrial">_nextTrial</a></li><li data-type='method'><a href="MultiStairHandler.html#_prepareStaircases">_prepareStaircases</a></li><li data-type='method'><a href="MultiStairHandler.html#_validateConditions">_validateConditions</a></li><li data-type='method'><a href="MultiStairHandler.html#addResponse">addResponse</a></li></ul></li><li><a href="Polygon.html">Polygon</a><ul class='methods'><li data-type='method'><a href="Polygon.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="Polygon.html#_getPixiPolygon">_getPixiPolygon</a></li><li data-type='method'><a href="Polygon.html#_getVertices_px">_getVertices_px</a></li><li data-type='method'><a href="Polygon.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Polygon.html#contains">contains</a></li><li data-type='method'><a href="Polygon.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="Polygon.html#setEdges">setEdges</a></li><li data-type='method'><a href="Polygon.html#setRadius">setRadius</a></li><li data-type='method'><a href="Polygon.html#setVertices">setVertices</a></li></ul></li><li><a href="QuestHandler.html">QuestHandler</a><ul class='methods'><li data-type='method'><a href="QuestHandler.html#_estimateQuestValue">_estimateQuestValue</a></li><li data-type='method'><a href="QuestHandler.html#_setupJsQuest">_setupJsQuest</a></li><li data-type='method'><a href="QuestHandler.html#addResponse">addResponse</a></li><li data-type='method'><a href="QuestHandler.html#confInterval">confInterval</a></li><li data-type='method'><a href="QuestHandler.html#getQuestValue">getQuestValue</a></li><li data-type='method'><a href="QuestHandler.html#mean">mean</a></li><li data-type='method'><a href="QuestHandler.html#mode">mode</a></li><li data-type='method'><a href="QuestHandler.html#quantile">quantile</a></li><li data-type='method'><a href="QuestHandler.html#sd">sd</a></li><li data-type='method'><a href="QuestHandler.html#setMethod">setMethod</a></li><li data-type='method'><a href="QuestHandler.html#simulate">simulate</a></li></ul></li><li><a href="Rect.html">Rect</a><ul class='methods'><li data-type='method'><a href="Rect.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="Rect.html#_getPixiPolygon">_getPixiPolygon</a></li><li data-type='method'><a href="Rect.html#_getVertices_px">_getVertices_px</a></li><li data-type='method'><a href="Rect.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Rect.html#_updateVertices">_updateVertices</a></li><li data-type='method'><a href="Rect.html#contains">contains</a></li><li data-type='method'><a href="Rect.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="Rect.html#setHeight">setHeight</a></li><li data-type='method'><a href="Rect.html#setVertices">setVertices</a></li><li data-type='method'><a href="Rect.html#setWidth">setWidth</a></li></ul></li><li><a href="Scheduler.html">Scheduler</a><ul class='methods'><li data-type='method'><a href="Scheduler.html#add">add</a></li><li data-type='method'><a href="Scheduler.html#addConditional">addConditional</a></li><li data-type='method'><a href="Scheduler.html#start">start</a></li><li data-type='method'><a href="Scheduler.html#stop">stop</a></li></ul></li><li><a href="ServerManager.html">ServerManager</a><ul class='methods'><li data-type='method'><a href="ServerManager.html#_downloadResources">_downloadResources</a></li><li data-type='method'><a href="ServerManager.html#_listResources">_listResources</a></li><li data-type='method'><a href="ServerManager.html#_queryServerAPI">_queryServerAPI</a></li><li data-type='method'><a href="ServerManager.html#_setupPreloadQueue">_setupPreloadQueue</a></li><li data-type='method'><a href="ServerManager.html#closeSession">closeSession</a></li><li data-type='method'><a href="ServerManager.html#getConfiguration">getConfiguration</a></li><li data-type='method'><a href="ServerManager.html#getResource">getResource</a></li><li data-type='method'><a href="ServerManager.html#getResourceStatus">getResourceStatus</a></li><li data-type='method'><a href="ServerManager.html#getSurveyExperimentParameters">getSurveyExperimentParameters</a></li><li data-type='method'><a href="ServerManager.html#openSession">openSession</a></li><li data-type='method'><a href="ServerManager.html#prepareResources">prepareResources</a></li><li data-type='method'><a href="ServerManager.html#releaseResource">releaseResource</a></li><li data-type='method'><a href="ServerManager.html#resetStatus">resetStatus</a></li><li data-type='method'><a href="ServerManager.html#setStatus">setStatus</a></li><li data-type='method'><a href="ServerManager.html#uploadAudioVideo">uploadAudioVideo</a></li><li data-type='method'><a href="ServerManager.html#uploadData">uploadData</a></li><li data-type='method'><a href="ServerManager.html#uploadLog">uploadLog</a></li><li data-type='method'><a href="ServerManager.html#uploadSurveyResponse">uploadSurveyResponse</a></li><li data-type='method'><a href="ServerManager.html#waitForResources">waitForResources</a></li></ul></li><li><a href="ShapeStim.html">ShapeStim</a><ul class='methods'><li data-type='method'><a href="ShapeStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="ShapeStim.html#_getPixiPolygon">_getPixiPolygon</a></li><li data-type='method'><a href="ShapeStim.html#_getVertices_px">_getVertices_px</a></li><li data-type='method'><a href="ShapeStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="ShapeStim.html#contains">contains</a></li><li data-type='method'><a href="ShapeStim.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="ShapeStim.html#setVertices">setVertices</a></li></ul></li><li><a href="Shelf.html">Shelf</a><ul class='methods'><li data-type='method'><a href="Shelf.html#_checkAvailability">_checkAvailability</a></li><li data-type='method'><a href="Shelf.html#_checkKey">_checkKey</a></li><li data-type='method'><a href="Shelf.html#_getValue">_getValue</a></li><li data-type='method'><a href="Shelf.html#_updateValue">_updateValue</a></li><li data-type='method'><a href="Shelf.html#addIntegerValue">addIntegerValue</a></li><li data-type='method'><a href="Shelf.html#appendListValue">appendListValue</a></li><li data-type='method'><a href="Shelf.html#clearListValue">clearListValue</a></li><li data-type='method'><a href="Shelf.html#counterbalanceConfirm">counterbalanceConfirm</a></li><li data-type='method'><a href="Shelf.html#counterbalanceSelect">counterbalanceSelect</a></li><li data-type='method'><a href="Shelf.html#flipBooleanValue">flipBooleanValue</a></li><li data-type='method'><a href="Shelf.html#getBooleanValue">getBooleanValue</a></li><li data-type='method'><a href="Shelf.html#getDictionaryFieldNames">getDictionaryFieldNames</a></li><li data-type='method'><a href="Shelf.html#getDictionaryFieldValue">getDictionaryFieldValue</a></li><li data-type='method'><a href="Shelf.html#getDictionaryValue">getDictionaryValue</a></li><li data-type='method'><a href="Shelf.html#getIntegerValue">getIntegerValue</a></li><li data-type='method'><a href="Shelf.html#getListValue">getListValue</a></li><li data-type='method'><a href="Shelf.html#getTextValue">getTextValue</a></li><li data-type='method'><a href="Shelf.html#incrementComponent">incrementComponent</a></li><li data-type='method'><a href="Shelf.html#popListValue">popListValue</a></li><li data-type='method'><a href="Shelf.html#setBooleanValue">setBooleanValue</a></li><li data-type='method'><a href="Shelf.html#setDictionaryFieldValue">setDictionaryFieldValue</a></li><li data-type='method'><a href="Shelf.html#setDictionaryValue">setDictionaryValue</a></li><li data-type='method'><a href="Shelf.html#setIntegerValue">setIntegerValue</a></li><li data-type='method'><a href="Shelf.html#setListValue">setListValue</a></li><li data-type='method'><a href="Shelf.html#setTextValue">setTextValue</a></li><li data-type='method'><a href="Shelf.html#shuffleListValue">shuffleListValue</a></li></ul></li><li><a href="Slider.html">Slider</a><ul class='methods'><li data-type='method'><a href="Slider.html#_addEventListeners">_addEventListeners</a></li><li data-type='method'><a href="Slider.html#_anchorTextToNum">_anchorTextToNum</a></li><li data-type='method'><a href="Slider.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="Slider.html#_getBoundingBox_px">_getBoundingBox_px</a></li><li data-type='method'><a href="Slider.html#_getPosition_px">_getPosition_px</a></li><li data-type='method'><a href="Slider.html#_getTextStyle">_getTextStyle</a></li><li data-type='method'><a href="Slider.html#_granularise">_granularise</a></li><li data-type='method'><a href="Slider.html#_handlePointerDown">_handlePointerDown</a></li><li data-type='method'><a href="Slider.html#_handlePointerMove">_handlePointerMove</a></li><li data-type='method'><a href="Slider.html#_handlePointerUp">_handlePointerUp</a></li><li data-type='method'><a href="Slider.html#_isHorizontal">_isHorizontal</a></li><li data-type='method'><a href="Slider.html#_onChange">_onChange</a></li><li data-type='method'><a href="Slider.html#_posToRating">_posToRating</a></li><li data-type='method'><a href="Slider.html#_ratingToPos">_ratingToPos</a></li><li data-type='method'><a href="Slider.html#_removeEventListeners">_removeEventListeners</a></li><li data-type='method'><a href="Slider.html#_sanitizeAttributes">_sanitizeAttributes</a></li><li data-type='method'><a href="Slider.html#_setupBar">_setupBar</a></li><li data-type='method'><a href="Slider.html#_setupLabels">_setupLabels</a></li><li data-type='method'><a href="Slider.html#_setupMarker">_setupMarker</a></li><li data-type='method'><a href="Slider.html#_setupSlider">_setupSlider</a></li><li data-type='method'><a href="Slider.html#_setupStyle">_setupStyle</a></li><li data-type='method'><a href="Slider.html#_setupTicks">_setupTicks</a></li><li data-type='method'><a href="Slider.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Slider.html#contains">contains</a></li><li data-type='method'><a href="Slider.html#draw">draw</a></li><li data-type='method'><a href="Slider.html#getRating">getRating</a></li><li data-type='method'><a href="Slider.html#getRT">getRT</a></li><li data-type='method'><a href="Slider.html#hide">hide</a></li><li data-type='method'><a href="Slider.html#isMarkerDragging">isMarkerDragging</a></li><li data-type='method'><a href="Slider.html#recordRating">recordRating</a></li><li data-type='method'><a href="Slider.html#refresh">refresh</a></li><li data-type='method'><a href="Slider.html#release">release</a></li><li data-type='method'><a href="Slider.html#reset">reset</a></li><li data-type='method'><a href="Slider.html#setAnchor">setAnchor</a></li><li data-type='method'><a href="Slider.html#setAutoDraw">setAutoDraw</a></li><li data-type='method'><a href="Slider.html#setDepth">setDepth</a></li><li data-type='method'><a href="Slider.html#setMarkerPos">setMarkerPos</a></li><li data-type='method'><a href="Slider.html#setOri">setOri</a></li><li data-type='method'><a href="Slider.html#setPos">setPos</a></li><li data-type='method'><a href="Slider.html#setRating">setRating</a></li><li data-type='method'><a href="Slider.html#setReadOnly">setReadOnly</a></li><li data-type='method'><a href="Slider.html#setSize">setSize</a></li></ul></li><li><a href="SliderStar.html">SliderStar</a></li><li><a href="SpeechRecognition.html">SpeechRecognition</a><ul class='methods'><li data-type='method'><a href="SpeechRecognition.html#_onChange">_onChange</a></li><li data-type='method'><a href="SpeechRecognition.html#_prepareRecognition">_prepareRecognition</a></li><li data-type='method'><a href="SpeechRecognition.html#clearTranscripts">clearTranscripts</a></li><li data-type='method'><a href="SpeechRecognition.html#getTranscripts">getTranscripts</a></li><li data-type='method'><a href="SpeechRecognition.html#start">start</a></li><li data-type='method'><a href="SpeechRecognition.html#stop">stop</a></li></ul></li><li><a href="StairHandler.html">StairHandler</a><ul class='methods'><li data-type='method'><a href="StairHandler.html#_decreaseValue">_decreaseValue</a></li><li data-type='method'><a href="StairHandler.html#_estimateStairValue">_estimateStairValue</a></li><li data-type='method'><a href="StairHandler.html#_increaseValue">_increaseValue</a></li><li data-type='method'><a href="StairHandler.html#_updateTrialList">_updateTrialList</a></li><li data-type='method'><a href="StairHandler.html#addResponse">addResponse</a></li><li data-type='method'><a href="StairHandler.html#getStairValue">getStairValue</a></li></ul></li><li><a href="Survey.html">Survey</a><ul class='methods'><li data-type='method'><a href="Survey.html#_augmentQuestionNames">_augmentQuestionNames</a></li><li data-type='method'><a href="Survey.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="Survey.html#_initSurveyJS">_initSurveyJS</a></li><li data-type='method'><a href="Survey.html#_onCurrentPageChanging">_onCurrentPageChanging</a></li><li data-type='method'><a href="Survey.html#_onFlowComplete">_onFlowComplete</a></li><li data-type='method'><a href="Survey.html#_onQuestionValueChanged">_onQuestionValueChanged</a></li><li data-type='method'><a href="Survey.html#_onSurveyJSComplete">_onSurveyJSComplete</a></li><li data-type='method'><a href="Survey.html#_processSurveyData">_processSurveyData</a></li><li data-type='method'><a href="Survey.html#_registerCustomExpressionFunctions">_registerCustomExpressionFunctions</a></li><li data-type='method'><a href="Survey.html#_registerCustomSurveyProperties">_registerCustomSurveyProperties</a></li><li data-type='method'><a href="Survey.html#_registerWidgets">_registerWidgets</a></li><li data-type='method'><a href="Survey.html#_runQuestionBlock">_runQuestionBlock</a></li><li data-type='method'><a href="Survey.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Survey.html#evaluateExpression">evaluateExpression</a></li><li data-type='method'><a href="Survey.html#getResponse">getResponse</a></li><li data-type='method'><a href="Survey.html#hide">hide</a></li><li data-type='method'><a href="Survey.html#onFinished">onFinished</a></li><li data-type='method'><a href="Survey.html#save">save</a></li><li data-type='method'><a href="Survey.html#setModel">setModel</a></li><li data-type='method'><a href="Survey.html#setSurveyId">setSurveyId</a></li><li data-type='method'><a href="Survey.html#setVariables">setVariables</a></li></ul></li><li><a href="TextBox.html">TextBox</a><ul class='methods'><li data-type='method'><a href="TextBox.html#_addEventListeners">_addEventListeners</a></li><li data-type='method'><a href="TextBox.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="TextBox.html#_getDefaultLetterHeight">_getDefaultLetterHeight</a></li><li data-type='method'><a href="TextBox.html#_getTextInputOptions">_getTextInputOptions</a></li><li data-type='method'><a href="TextBox.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="TextBox.html#clear">clear</a></li><li data-type='method'><a href="TextBox.html#getText">getText</a></li><li data-type='method'><a href="TextBox.html#reset">reset</a></li><li data-type='method'><a href="TextBox.html#setAlignment">setAlignment</a></li><li data-type='method'><a href="TextBox.html#setBorderColor">setBorderColor</a></li><li data-type='method'><a href="TextBox.html#setColor">setColor</a></li><li data-type='method'><a href="TextBox.html#setFillColor">setFillColor</a></li><li data-type='method'><a href="TextBox.html#setFitToContent">setFitToContent</a></li><li data-type='method'><a href="TextBox.html#setFont">setFont</a></li><li data-type='method'><a href="TextBox.html#setLanguageStyle">setLanguageStyle</a></li><li data-type='method'><a href="TextBox.html#setLetterHeight">setLetterHeight</a></li><li data-type='method'><a href="TextBox.html#setSize">setSize</a></li><li data-type='method'><a href="TextBox.html#setText">setText</a></li></ul></li><li><a href="TextStim.html">TextStim</a><ul class='methods'><li data-type='method'><a href="TextStim.html#_estimateBoundingBox">_estimateBoundingBox</a></li><li data-type='method'><a href="TextStim.html#_getAnchor">_getAnchor</a></li><li data-type='method'><a href="TextStim.html#_getDefaultLetterHeight">_getDefaultLetterHeight</a></li><li data-type='method'><a href="TextStim.html#_getDefaultWrapWidth">_getDefaultWrapWidth</a></li><li data-type='method'><a href="TextStim.html#_getTextStyle">_getTextStyle</a></li><li data-type='method'><a href="TextStim.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="TextStim.html#getBoundingBox">getBoundingBox</a></li><li data-type='method'><a href="TextStim.html#getTextMetrics">getTextMetrics</a></li><li data-type='method'><a href="TextStim.html#setColor">setColor</a></li></ul></li><li><a href="TonePlayer.html">TonePlayer</a><ul class='methods'><li data-type='method'><a href="TonePlayer.html#_initSoundLibrary">_initSoundLibrary</a></li><li data-type='method'><a href="TonePlayer.html#getDuration">getDuration</a></li><li data-type='method'><a href="TonePlayer.html#play">play</a></li><li data-type='method'><a href="TonePlayer.html#setDuration">setDuration</a></li><li data-type='method'><a href="TonePlayer.html#setLoops">setLoops</a></li><li data-type='method'><a href="TonePlayer.html#setTone">setTone</a></li><li data-type='method'><a href="TonePlayer.html#setVolume">setVolume</a></li><li data-type='method'><a href="TonePlayer.html#stop">stop</a></li></ul></li><li><a href="TrackPlayer.html">TrackPlayer</a><ul class='methods'><li data-type='method'><a href="TrackPlayer.html#getDuration">getDuration</a></li><li data-type='method'><a href="TrackPlayer.html#play">play</a></li><li data-type='method'><a href="TrackPlayer.html#setDuration">setDuration</a></li><li data-type='method'><a href="TrackPlayer.html#setLoops">setLoops</a></li><li data-type='method'><a href="TrackPlayer.html#setTrack">setTrack</a></li><li data-type='method'><a href="TrackPlayer.html#setVolume">setVolume</a></li><li data-type='method'><a href="TrackPlayer.html#stop">stop</a></li></ul></li><li><a href="Transcript.html">Transcript</a></li><li><a href="Window.html">Window</a><ul class='methods'><li data-type='method'><a href="Window.html#_fullRefresh">_fullRefresh</a></li><li data-type='method'><a href="Window.html#_refresh">_refresh</a></li><li data-type='method'><a href="Window.html#_setupPixi">_setupPixi</a></li><li data-type='method'><a href="Window.html#_updateIfNeeded">_updateIfNeeded</a></li><li data-type='method'><a href="Window.html#_writeLogOnFlip">_writeLogOnFlip</a></li><li data-type='method'><a href="Window.html#addPixiObject">addPixiObject</a></li><li data-type='method'><a href="Window.html#adjustScreenSize">adjustScreenSize</a></li><li data-type='method'><a href="Window.html#callOnFlip">callOnFlip</a></li><li data-type='method'><a href="Window.html#close">close</a></li><li data-type='method'><a href="Window.html#closeFullScreen">closeFullScreen</a></li><li data-type='method'><a href="Window.html#getActualFrameRate">getActualFrameRate</a></li><li data-type='method'><a href="Window.html#logOnFlip">logOnFlip</a></li><li data-type='method'><a href="Window.html#removePixiObject">removePixiObject</a></li><li data-type='method'><a href="Window.html#render">render</a></li></ul></li></ul><h3>Interfaces</h3><ul><li><a href="SoundPlayer.html">SoundPlayer</a><ul class='methods'><li data-type='method'><a href="SoundPlayer.html#getDuration">getDuration</a></li><li data-type='method'><a href="SoundPlayer.html#play">play</a></li><li data-type='method'><a href="SoundPlayer.html#setDuration">setDuration</a></li><li data-type='method'><a href="SoundPlayer.html#setLoops">setLoops</a></li><li data-type='method'><a href="SoundPlayer.html#setVolume">setVolume</a></li><li data-type='method'><a href="SoundPlayer.html#stop">stop</a></li></ul></li></ul><h3>Mixins</h3><ul><li><a href="module-core.WindowMixin.html">WindowMixin</a><ul class='methods'><li data-type='method'><a href="module-core.WindowMixin.html#_getHorLengthPix">_getHorLengthPix</a></li><li data-type='method'><a href="module-core.WindowMixin.html#_getLengthPix">_getLengthPix</a></li><li data-type='method'><a href="module-core.WindowMixin.html#_getLengthUnits">_getLengthUnits</a></li><li data-type='method'><a href="module-core.WindowMixin.html#_getVerLengthPix">_getVerLengthPix</a></li></ul></li><li><a href="module-util.ColorMixin.html">ColorMixin</a><ul class='methods'><li data-type='method'><a href="module-util.ColorMixin.html#getContrastedColor">getContrastedColor</a></li><li data-type='method'><a href="module-util.ColorMixin.html#setColor">setColor</a></li><li data-type='method'><a href="module-util.ColorMixin.html#setContrast">setContrast</a></li></ul></li></ul><h3>Global</h3><ul><li><a href="global.html#CELL_TYPES">CELL_TYPES</a></li><li><a href="global.html#handleBipolarMatrixRendering">handleBipolarMatrixRendering</a></li><li><a href="global.html#handleValueChange">handleValueChange</a></li></ul>
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<section class="package">
<h3> </h3>
</section>
<section class="readme usertext">
<article><h1>PsychoJS</h1>
<p><a href="https://github.com/psychopy/psychojs/actions/workflows/Automated%20Test%20(short).yml"><img src="https://github.com/psychopy/psychojs/actions/workflows/Automated%20Test%20(short).yml/badge.svg" alt="Automated Test (short)"></a>
<a href="https://github.com/psychopy/psychojs/actions/workflows/Automated%20Test%20(full).yml"><img src="https://github.com/psychopy/psychojs/actions/workflows/Automated%20Test%20(full).yml/badge.svg" alt="Automated Test (full)"></a>
<a href="code-of-conduct.md"><img src="https://img.shields.io/badge/Contributor%20Covenant-v1.4%20adopted-ff69b4.svg" alt="Contributor Covenant"></a></p>
<p>PsychoJS is a JavaScript library that makes it possible to run neuroscience, psychology, and psychophysics experiments in a browser. It is the online counterpart of the <a href="http://www.psychopy.org/">PsychoPy</a> Python library.</p>
<p>You can create online experiments from the <a href="http://www.psychopy.org/builder/builder.html">PsychoPy Builder</a>, you can find and adapt existing experiments on <a href="https://www.pavlovia.org">pavlovia.org</a>, or create them from scratch.</p>
<p>PsychoJS is an open-source project. You can contribute by submitting pull requests to the <a href="https://github.com/psychopy/psychojs">PsychoJS GitHub repository</a>, and discuss issues and current and future features on the <a href="https://discourse.psychopy.org/c/online">Online category of the PsychoPy Forum</a>.</p>
<h2>Motivation</h2>
<p>Many studies in behavioural sciences (e.g. psychology, neuroscience, linguistics or mental health) use computers to present stimuli and record responses in a precise manner. These studies are still typically conducted on small numbers of people in laboratory environments equipped with dedicated hardware.</p>
<p>With high-speed broadband, improved web technologies and smart devices everywhere, studies can now go online without sacrificing too much temporal precision. This is a &quot;game changer&quot;. Data can be collected on larger, more varied, international populations. We can study people in environments they do not find intimidating. Experiments can be run multiple times per day, without data collection becoming impractical.</p>
<p>The idea behind PsychoJS is to make PsychoPy experiments available online, from a web page, so participants can run them on any device equipped with a web browser such as desktops, laptops, or tablets. In some circumstance, they can even use their phone!</p>
<h2>Getting Started</h2>
<p>Running PsychoPy experiments online requires the generation of an index.html file and of a javascript file that contains the code describing the experiment. Those files need to be hosted on a web server to which participants will point their browser in order to run the experiment. The server will also need to host the PsychoJS library.</p>
<h3>PsychoPy Builder</h3>
<p>The recommended approach to creating experiments is to use <a href="http://www.psychopy.org/builder/builder.html">PsychoPy Builder</a> to generate the javascript and html files. Many of the existing Builder experiments should &quot;just work&quot;, subject to the <a href="https://www.psychopy.org/online/status.html">Components being compatible between PsychoPy and PsychoJS</a>.</p>
<h3>JavaScript Code</h3>
<p>We built the PsychoJS library to make the JavaScript experiment files look and behave in very much the same way as the Builder-generated Python files. PsychoJS offers classes such as <code>Window</code> and <code>ImageStim</code>, with very similar attributes to their Python equivalents. Experiment designers familiar with the PsychoPy library should feel at home with PsychoJS, and can expect the same level of control they have with PsychoPy, from the structure of the trials/loops all the way down to frame-by-frame updates.</p>
<p>There are however notable differences between the PsychoJS and PsychoPy libraries, most of which having to do with the way a web browser interprets and runs JavaScript, deals with resources (such as images, sound or videos), or render stimuli. To manage those web-specific aspect, PsychoJS introduces the concept of Scheduler. As the name indicate, Scheduler's offer a way to organise various tasks along a timeline, such as downloading resources, running a loop, checking for keyboard input, saving experiment results, etc. As an illustration, a Flow in PsychoPy can be conceptualised as a Schedule, with various tasks on it. Some of those tasks, such as trial loops, can also schedule further events (i.e. the individual trials to be run).
taskshe hood PsychoJS relies on <a href="http://www.pixijs.com">PixiJS</a> to present stimuli and collect responses. PixiJS is a high performance, multi-platform 2D renderer, that runs in most modern browsers. It uses WebGL wherever possible and silently falls back to HTML5 canvas where not. WebGL directly addresses the graphic card, thereby considerably improving the rendering performance.</p>
<h3>Hosting Experiments</h3>
<p>A convenient way to make experiment available to participants is to host them on <a href="https://www.pavlovia.org">pavlovia.org</a>, an open-science server. PsychoPy Builder offers the possibility of uploading the experiment directly to pavlovia.org.</p>
<h2>Which PsychoPy Components are supported by PsychoJS?</h2>
<p>For the list of PsychoPy Builder Components supported by PsychoJS see this <a href="https://www.psychopy.org/online/status.html">PsychoPy/JS online status page</a>.</p>
<h2>API</h2>
<p>The documentation of the PsychoJS API is available <a href="https://psychopy.github.io/psychojs/">here</a>.</p>
<h2>Maintainers</h2>
<p>Alain Pitiot - <a href="https://github.com/apitiot">@apitiot</a></p>
<h2>Contributors</h2>
<p>The PsychoJS library was initially written by <a href="http://www.ilixa.com">Ilixa</a> with support from the <a href="https://wellcome.ac.uk">Wellcome Trust</a>.
It is now a collaborative effort, supported by the <a href="https://chanzuckerberg.com/">Chan Zuckerberg Initiative</a> (2020-2021) and <a href="https://opensciencetools.org/">Open Science Tools</a> (2020-):</p>
<ul>
<li>Alain Pitiot - <a href="https://github.com/apitiot">@apitiot</a></li>
<li>Nikita Agafonov - <a href="https://github.com/lightest">@lightest</a></li>
<li>Sotiri Bakagiannis - <a href="https://github.com/thewhodidthis">@thewhodidthis</a></li>
<li>Jonathan Peirce - <a href="https://github.com/peircej">@peircej</a></li>
<li>Thomas Pronk - <a href="https://github.com/tpronk">@tpronk</a></li>
<li>Hiroyuki Sogo - <a href="https://github.com/hsogo">@hsogo</a></li>
<li>Sijia Zhao - <a href="https://github.com/sijiazhao">@sijiazhao</a></li>
</ul>
<p>The PsychoPy Builder's javascript code generator is built and maintained by the creators of PsychoPy at the <a href="https://www.nottingham.ac.uk">University of Nottingham</a>, with support from the <a href="https://wellcome.ac.uk">Wellcome Trust</a> (2017-2019), from the <a href="https://chanzuckerberg.com/">Chan Zuckerberg Initiative</a> (2020-2021), and from <a href="https://opensciencetools.org/">Open Science Tools</a> (2020-):</p>
<ul>
<li>Jonathan Peirce - <a href="https://github.com/peircej">@peircej</a></li>
<li>David Bridges - <a href="https://github.com/dvbridges">@dvbridges</a></li>
<li>Todd Parsons - <a href="https://github.com/TEParsons">@TEParsons</a></li>
</ul>
<h2>License</h2>
<p>This project is licensed under the MIT License - see the <a href="LICENSE.md">LICENSE.md</a> file for details.</p></article>
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