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82 lines
2.4 KiB
JavaScript
82 lines
2.4 KiB
JavaScript
/**
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* jspsych-survey-slider
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* a jspsych plugin for free response survey questions
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*
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* Josh de Leeuw
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*
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* documentation: docs.jspsych.org
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*
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*/
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jsPsych.plugins['survey-slider'] = (function() {
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var plugin = {};
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plugin.info = {
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name: 'survey-slider',
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description: '',
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parameters: {
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}
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}
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plugin.trial = function(display_element, trial) {
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trial.preamble = typeof trial.preamble == 'undefined' ? "" : trial.preamble;
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trial.button_label = typeof trial.button_label === 'undefined' ? 'Next' : trial.button_label;
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// if any trial variables are functions
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// this evaluates the function and replaces
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// it with the output of the function
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trial = jsPsych.pluginAPI.evaluateFunctionParameters(trial);
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// show preamble text
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var html = '<div id="jspsych-survey-slider-preamble" class="jspsych-survey-slider-preamble">'+trial.preamble+'</div>';
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// add questions
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for (var i = 0; i < trial.questions.length; i++) {
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html += '<div id="jspsych-survey-slider-"'+i+'" class="jspsych-survey-slider-question" style="margin: 2em 0em;">';
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html += '<div class="jspsych-survey-slider-question-text">' + trial.questions[i] + '</div>';
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html += '<input type="range" name="#jspsych-survey-slider-response-' + i + '"></input>';
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html += '</div>';
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}
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// add submit button
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html += '<button id="jspsych-survey-slider-next" class="jspsych-btn">'+trial.button_label+'</button>';
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display_element.innerHTML = html;
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display_element.querySelector('#jspsych-survey-slider-next').addEventListener('click', function() {
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// measure response time
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var endTime = (new Date()).getTime();
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var response_time = endTime - startTime;
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// create object to hold responses
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var question_data = {};
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var matches = display_element.querySelectorAll('div.jspsych-survey-slider-question');
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for(var index=0; index<matches.length; index++){
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var id = "Q" + index;
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var val = matches[index].querySelector('input').value;
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var obje = {};
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obje[id] = val;
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Object.assign(question_data, obje);
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}
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// save data
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var trialdata = {
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"rt": response_time,
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"responses": JSON.stringify(question_data)
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};
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display_element.innerHTML = '';
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// next trial
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jsPsych.finishTrial(trialdata);
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});
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var startTime = (new Date()).getTime();
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};
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return plugin;
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})();
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