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pwittchen/loadJson.js

Created April 19, 2014 18:25
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  1. pwittchen created this gist Apr 19, 2014.
    18 changes: 18 additions & 0 deletions loadJson.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,18 @@
    function loadJson(callback) {
    var XmlHttpRequest = new XMLHttpRequest();
    XmlHttpRequest.overrideMimeType("application/json");
    XmlHttpRequest.open('GET', 'file.json', true);
    XmlHttpRequest.onreadystatechange = function () {
    if (XmlHttpRequest.readyState == 4 && XmlHttpRequest.status == "200") {
    // .open will NOT return a value
    // but simply returns undefined in async mode so use a callback
    callback(XmlHttpRequest.responseText);
    }
    }
    XmlHttpRequest.send(null);
    }

    loadJson(function(response) {
    jsonResponse = JSON.parse(response);
    console.log(jsonResponse);
    });