json stringify

json.stringify.js

var JSON = {};
JSON.stringify = JSON.stringify ||
function (a) {
  var t = typeof (a);
  if (t != "object" || a === null) {
    if (t == "string") a = '"' + a + '"';
    return String(a);
  } else {
    var n, v, json = [],
      arr = (a && a.constructor == Array);
    for (n in a) {
      if (n) {
        v = a[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 ? "]" : "}");
  }
};