json-sorter

A simple utility to sort a JSON object based on keys.

The demo is live here

If you wish to use the sorting in your code, here is the main function that does the trick

function sortJson(json){
   var sortedJson;
   sortedJson = '';
   if (json instanceof Array) {
      sortedJson += '[';
      sortedJson += json.map(function(item) {
         return sortJson(item);
      }).join(',');
      sortedJson += ']';
   } else if (json === null) {
      sortedJson += 'null';
   } else {
      switch (typeof json) {
         case 'undefined':
            sortedJson += 'null';
            break;
         case 'string':
            sortedJson += '"' + json + '"';
            break;
         case 'number':
         case 'boolean':
            sortedJson += json;
            break;
         case 'object':
            sortedJson += '{';
            sortedJson += Object.keys(json).sort().map(function(key) {
               return '"' + key + '":' + sortJson(json[key]);
            }).join(',');
            sortedJson += '}';
            break;
      }
   }
   return sortedJson;
}