function getFormJson(frm) { //frm：form表單的id    var o = {};     var a = $("#"+frm).serializeArray();     $.each(a, function() {       if (o[this.name] !== undefined) {         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;   }

$.ajax({  type: 'post',  url: 'your url',  data: getFormJson(frm),  success: function(data) {    // your code  }});