sample-jspsych-psiturk-experiment/jspsych.js at master · jspsych/sample-jspsych-psiturk-experiment

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Wed Jun 02 2021 17:02:33 GMT+0000 (UTC)

Saved by @Kara_schwartz29 ##jspsych ##javascript ##psiturk

   jsPsych.dataAPI = (function() {
        
        var module = {};
        
        // core.dataAsCSV returns a CSV string that contains all of the data
        //      append_data is an option map object that will append values
        //      to every row. for example, if append_data = {"subject": 4},
        //      then a column called subject will be added to the data and
        //      it will always have the value 4.
        module.dataAsCSV = function(append_data) {
            var dataObj = jsPsych.data();
            return JSON2CSV(flattenData(dataObj, append_data));
        };

        module.localSave = function(filename, format, append_data) {
            
            var data_string;
            
            if(format == 'JSON' || format == 'json') {
                data_string = JSON.stringify(flattenData(jsPsych.data(), append_data));
            } else if(format == 'CSV' || format == 'csv') {
                data_string = module.dataAsCSV(append_data);
            } else {
                throw new Error('invalid format specified for jsPsych.dataAPI.localSave');
            }
            
            saveTextToFile(data_string, filename);
        };
        
        module.getTrialsOfType = function(trial_type){
            var data = jsPsych.data();
            
            data = flatten(data);
            
            var trials = [];
            for(var i = 0; i < data.length; i++){
                if(data[i].trial_type == trial_type){
                    trials.push(data[i]);
                }
            }
            
            return trials;
        };
        
        module.displayData = function(format) {
            format = (typeof format === 'undefined') ? "json" : format.toLowerCase();
            if(format != "json" && format != "csv") {
                console.log('Invalid format declared for displayData function. Using json as default.');
                format = "json";
            }
            
            var data_string;
            
            if(format == 'json') {
                data_string = JSON.stringify(flattenData(jsPsych.data()), undefined, 1);
            } else {
                data_string = module.dataAsCSV();
            } 
            
            var display_element = jsPsych.getDisplayElement();
            
            display_element.append($('<pre>', {
                html: data_string
            }));
        }
        
        // private function to save text file on local drive
        function saveTextToFile(textstr, filename) {
            var blobToSave = new Blob([textstr], {
                type: 'text/plain'
            });
            var blobURL = "";
            if (typeof window.webkitURL !== 'undefined') {
                blobURL = window.webkitURL.createObjectURL(blobToSave);
            }
            else {
                blobURL = window.URL.createObjectURL(blobToSave);
            }
            
            var display_element = jsPsych.getDisplayElement();
            
            display_element.append($('<a>', {
                id: 'jspsych-download-as-text-link',
                href: blobURL,
                css: {
                    display: 'none'
                },
                download: filename,
                html: 'download file'
            }));
            $('#jspsych-download-as-text-link')[0].click();
        }
        
        //
        // A few helper functions to handle data format conversion
        //
        function flattenData(data_object, append_data) {

            append_data = (typeof append_data === undefined) ? {} : append_data;

            var trials = [];

            // loop through data_object
            for (var i = 0; i < data_object.length; i++) {
                for (var j = 0; j < data_object[i].length; j++) {
                    var data = $.extend({}, data_object[i][j], append_data);
                    trials.push(data);
                }
            }

            return trials;
        }
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https://github.com/jspsych/sample-jspsych-psiturk-experiment/blob/master/static/js/jspsych/jspsych.js