# The jsPsych core library

Every jsPsych experiment utilizes the core library (contained in the `jspsych.js` file). The core library is the glue that holds all of the various plugins together. There are also several modules that are contained in the core library for tasks that are common to many different experiments. These modules are available whenever the `jspsych.js` file is loaded.

## Core library API

### [Core](jspsych-core.md)

* [jsPsych.addNodeToEndOfTimeline](jspsych-core.md#jspsychaddnodetoendoftimeline)
* [jsPsych.currentTimelineNodeID](jspsych-core.md#jspsychcurrenttimelinenodeid)
* [jsPsych.currentTrial](jspsych-core.md#jspsychcurrenttrial)
* [jsPsych.endCurrentTimeline](jspsych-core.md#jspsychendcurrenttimeline)
* [jsPsych.endExperiment](jspsych-core.md#jspsychendexperiment)
* [jsPsych.finishTrial](jspsych-core.md#jspsychfinishtrial)
* [jsPsych.getDisplayElement](jspsych-core.md#jspsychgetdisplayelement)
* [jsPsych.init](jspsych-core.md#jspsychinit)
* [jsPsych.initSettings](jspsych-core.md#jspsychinitsettings)
* [jsPsych.pauseExperiment](jspsych-core.md#jspsychpauseexperiment)
* [jsPsych.progress](jspsych-core.md#jspsychprogress)
* [jsPsych.resumeExperiment](jspsych-core.md#jspsychresumeexperiment)
* [jsPsych.startTime](jspsych-core.md#jspsychstarttime)
* [jsPsych.totalTime](jspsych-core.md#jspsychtotaltime)

### [Data module](jspsych-data.md)

* [jsPsych.data.addProperties](jspsych-data.md#jspsychdataaddproperties)
* [jsPsych.data.displayData](jspsych-data.md#jspsychdatadisplaydata)
* [jsPsych.data.get](jspsych-data.md#jspsychdataget)
* [jsPsych.data.getDataByTimelineNode](jspsych-data.md#jspsychdatagetdatabytimelinenode)
* [jsPsych.data.getInteractionData](jspsych-data.md#jspsychdatagetinteractiondata)
* [jsPsych.data.getLastTimelineData](jspsych-data.md#jspsychdatagetlasttimelinedata)
* [jsPsych.data.getLastTrialData](jspsych-data.md#jspsychdatagetlasttrialdata)
* [jsPsych.data.getURLVariable](jspsych-data.md#jspsychdatageturlvariable)
* [jsPsych.data.urlVariables](jspsych-data.md#jspsychdataurlvariables)
* [jsPsych.data.write](jspsych-data.md#jspsychdatawrite)
* [DataCollection](jspsych-data.md#datacollection)
* [DataColumn](jspsych-data.md#datacolumn)

### [Turk module](jspsych-turk.md)

* [jsPsych.turk.submitToTurk](jspsych-turk.md#jspsychturksubmittoturk)
* [jsPsych.turk.turkInfo](jspsych-turk.md#jspsychturkturkinfo)

### [Randomization module](jspsych-randomization.md)

* [jsPsych.randomization.factorial](jspsych-randomization.md#jspsychrandomizationfactorial)
* [jsPsych.randomization.randomID](jspsych-randomization.md#jspsychrandomizationrandomid)
* [jsPsych.randomization.repeat](jspsych-randomization.md#jspsychrandomizationrepeat)
* [jsPsych.randomization.sampleWithReplacement](jspsych-randomization.md#jspsychrandomizationsamplewithreplacement)
* [jsPsych.randomization.sampleWithoutReplacement](jspsych-randomization.md#jspsychrandomizationsamplewithoutreplacement)
* [jsPsych.randomization.shuffle](jspsych-randomization.md#jspsychrandomizationshuffle)
* [jsPsych.randomization.shuffleNoRepeats](jspsych-randomization.md#jspsychrandomizationshufflenorepeats)

### [PluginAPI module](jspsych-pluginAPI.md)

* [jsPsych.pluginAPI.autoPreload](jspsych-pluginAPI.md#jspsychpluginapiautopreload)
* [jsPsych.pluginAPI.cancelAllKeyboardResponses](jspsych-pluginAPI.md#jspsychpluginapicancelallkeyboardresponses)
* [jsPsych.pluginAPI.cancelKeyboardResponse](jspsych-pluginAPI.md#jspsychpluginapicancelkeyboardresponse)
* [jsPsych.pluginAPI.clearAllTimeouts](jspsych-pluginAPI.md#jspsychpluginapiclearalltimeouts)
* [jsPsych.pluginAPI.convertKeyCharacterToKeyCode](jspsych-pluginAPI.md#jspsychpluginapiconvertkeycharactertokeycode)
* [jsPsych.pluginAPI.getAudioBuffer](jspsych-pluginAPI.md#jspsychpluginapigetaudiobuffer)
* [jsPsych.pluginAPI.getKeyboardResponse](jspsych-pluginAPI.md#jspsychpluginapigetkeyboardresponse)
* [jsPsych.pluginAPI.evaluateFunctionParameters](jspsych-pluginAPI.md#jspsychpluginapievaluatefunctionparameters)
* [jsPsych.pluginAPI.preloadAudioFiles](jspsych-pluginAPI.md#jspsychpluginapipreloadaudiofiles)
* [jsPsych.pluginAPI.preloadImages](jspsych-pluginAPI.md#jspsychpluginapipreloadimages)
* [jsPsych.pluginAPI.registerPreload](jspsych-pluginAPI.md#jspsychpluginapiregisterpreload)
* [jsPsych.pluginAPI.setTimeout](jspsych-pluginAPI.md#settimeout)