adds dataAsJSON (#212)

contributors.md

@@ -3,6 +3,7 @@ The following people have contributed to the development of jsPsych by writing c
 * Josh de Leeuw - https://github.com/jodeleeuw
 * Jonas Lambers
 * Shane Martin - https://github.com/shamrt
+* Adrian Oesch - https://github.com/adrianoesch
 * Marian Sauter - https://github.com/mariansauter
 * Tim Vergenz - https://github.com/vergenzt
 * Erik Weitnauer - https://github.com/eweitnauer

docs/markdown_docs/core_library/jspsych-data.md

@@ -97,6 +97,29 @@ Generate a CSV formatted string containing all of the data generated in the expe
 var csvString = jsPsych.data.dataAsCSV();
 ```
 
+---
+## jsPsych.data.dataAsJSON
+
+```
+jsPsych.data.dataAsJSON()
+```
+
+### Return value
+
+Returns a string in JSON format
+
+### Description
+
+Generate a JSON formatted string containing all of the data generated in the experiment.
+
+### Examples
+
+#### Basic example
+```javascript
+var jsonString = jsPsych.data.dataAsJSON();
+```
+
+
 ---
 ## jsPsych.data.displayData
 

docs/markdown_docs/core_library/overview.md

@@ -24,6 +24,7 @@ Every jsPsych experiment utilizes the core library (contained in the `jspsych.js
 * [jsPsych.data.addDataToLastTrial](jspsych-data.md#jspsychdataadddatatolasttrial)
 * [jsPsych.data.addProperties](jspsych-data.md#jspsychdataaddproperties)
 * [jsPsych.data.dataAsCSV](jspsych-data.md#jspsychdatadataascsv)
+* [jsPsych.data.dataAsJSON](jspsych-data.md#jspsychdatadataasjson)
 * [jsPsych.data.displayData](jspsych-data.md#jspsychdatadisplaydata)
 * [jsPsych.data.getData](jspsych-data.md#jspsychdatagetdata)
 * [jsPsych.data.getLastChunkData](jspsych-data.md#jspsychdatagetlastchunkdata)

jspsych.js

@@ -645,6 +645,11 @@ jsPsych.data = (function() {
     return JSON2CSV(dataObj);
   };
 
+  module.dataAsJSON = function() {
+    var dataObj = module.getData();
+    return JSON.stringify(dataObj);
+  };
+
   module.localSave = function(filename, format) {
 
     var data_string;