jQuery post json data

ajaxPost.js

$.fn.serializeObject = function() {
      var o = {};
      var a = this.serializeArray();
      $.each(a, function() {
          if (o[this.name]) {
              if (!o[this.name].push) {
                  o[this.name] = [o[this.name]];
              }
              o[this.name].push(this.value || '');
          } else {
              o[this.name] = this.value || '';
          }
      });
      return o;
  };
  
  var myJSObject = $('#form').serializeObject();
  
$.ajax(url, {
    data : JSON.stringify(myJSObject),
    contentType : 'application/json',
    type : 'POST',
)