for in 的使用

data1=[
      {id:10001,icon:"icon/1.png",name:"计算机",price:1},
      {id:10002,icon:"icon/2.png",name:"服务器",price:112},
      {id:10003,icon:"icon/3.png",name:"监控",price:10},
      {id:10004,icon:"icon/4.png",name:"地动仪",price:23},
      {id:10005,icon:"icon/5.png",name:"丰收器",price:445},
      {id:10006,icon:"icon/6.png",name:"光纤仪",price:15},
      ];




      for(var key in data1[0]){
　　　　//这里的key是键  data1[0][key]就是键下面的值   for in 循环就是键值循环遍历
        console.log(key);
      }
//这里的data1直接写 就是数组，data[0] 就是数组下的对象了
//如果是数组的话  就是显示的对应数组的下标 0 1 2 3 4 5 6  键值对形式的
      for(var key in data1){
        console.log(key);
      }