$.extend

var obj1={apple:0,banana:{weight:52,price:100},cherry:97};

$.exytend(obj1);

$.cherry====>97

$.apple=====>0

$.banana====>{weight:52,price:100}

var obj2={banana:{price:100},durian:100}

var obj=$.extend(obj1,obj2):是将obj2合并到obj1中然后返回obj1

JSON.stringify(obj)=====>’{apple:0,banana:{“price":100},cherry:97,durian:100}’;

 

 

 

 

var obj1={apple:0,banana{weight:52,price:100},cherry:97};

var obj2={banana:{price:100},durian:100}

var obj=$.extend(true,obj1,obj2)

JSON.stringify(obj)=====>’{apple:0,banana:{“weight":52,”price":100},cherry:97,durian:100}’;

 

 

ps:JSON.stringify()是用于从一个对象解析出字符串