'JSON' is undefined error in IE only
Use json2 for a consistent cross browser implementation.
I had the issue with IE9. IE9 was rendering my page in "quirks" mode, the solution was simply to add <!DOCTYPE html>. This took me out of "quirks" mode which I'm sure fixed more than just this issue!
Update
Check the JSON3 library. It works like a charm.
I hope this helps.
Hope this helps. I got this from a few online sources long back. don't have their links.
Sorry that i'm unable to cite references.
var JSON = JSON || {};// implement JSON.stringify serializationJSON.stringify = JSON.stringify || function(obj) { var t = typeof (obj); if (t != "object" || obj === null) { // simple data type if (t == "string") obj = '"' + obj + '"'; return String(obj); } else { // recurse array or object var n, v, json = [], arr = (obj && obj.constructor == Array); for (n in obj) { v = obj[n]; t = typeof (v); if (t == "string") v = '"' + v + '"'; else if (t == "object" && v !== null) v = JSON.stringify(v); json.push((arr ? "" : '"' + n + '":') + String(v)); } return (arr ? "[" : "{") + String(json) + (arr ? "]" : "}"); }};// implement JSON.parse de-serializationJSON.parse = JSON.parse || function() { var r = "(?:-?\\b(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\\b)", k = '(?:[^\\0-\\x08\\x0a-\\x1f"\\\\]|\\\\(?:["/\\\\bfnrt]|u[0-9A-Fa-f]{4}))'; k = '(?:"' + k + '*")'; var s = new RegExp( "(?:false|true|null|[\\{\\}\\[\\]]|" + r + "|" + k + ")", "g"), t = new RegExp( "\\\\(?:([^u])|u(.{4}))", "g"), u = { '"' : '"', "/" : "/", "\\" : "\\", b : "\u0008", f : "\u000c", n : "\n", r : "\r", t : "\t" }; function v(h, j, e) { return j ? u[j] : String.fromCharCode(parseInt(e, 16)); } var w = new String(""), x = Object.hasOwnProperty; return function(h, j) { h = h.match(s); var e, c = h[0], l = false; if ("{" === c) e = {}; else if ("[" === c) e = []; else { e = []; l = true; } for ( var b, d = [ e ], m = 1 - l, y = h.length; m = 0;) delete f[i[g]]; } return j.call(n, o, f); }; e = p({ "" : e }, ""); } return e; };}();