form表单转Json提交的方法(推荐)

var formArray = $("#form").serializeArray();

function arrayToJson(formArray){
  var dataArray = {};
  $.each(formArray,function(){
    if(dataArray[this.name]){
      if(!dataArray[this.name].push){
        dataArray[this.name] = [dataArray[this.name]];
      }
      dataArray[this.name].push(this.value || '');
    }else{
      dataArray[this.name] = this.value || '';
    }
  });
  return JSON.stringify(dataArray);
}