serializeJSON

$.fn.serializeJSON=function(){
    var serializeObj={};
    var array=this.serializeArray();
    $(array).each(function(){
        if(serializeObj[this.name]){
            if($.isArray(serializeObj[this.name])){
                serializeObj[this.name].push(this.value);
            }else{
                serializeObj[this.name]=[serializeObj[this.name],this.value];
            }
        }else{
            serializeObj[this.name]=this.value;
        }
    });
    return serializeObj;
};