前端表单序列化为json串，以及构造json数组、json串

var parm={
				username:"zhangsan",
				age:24,
				email:"352400260@qq.com"
		};
		console.log(JSON.stringify(parm));
		
		var person = new Object();
		person.username = "lisi";
		person.age = "34";
		person.email = "1350812980@qq.com";
		console.log(JSON.stringify(person));

　　

(function($){  
        $.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;  
        };  
    })(jQuery);