jQuery.extend重载合并

使用：

var people1 = {

  apple: 0,

  banana: { weight: 52, price: 100 },

  age: 97

};

var people2 = {

  banana: { price: 200 },

  age: 100

};



jQuery.extend(people1,people2);

//或$.extend(people1,people2););
//或var c=$.extend(people1,people2););

 people1的内容变为：{apple:0,banana{price:200},age:100}