将数组转化为一个对象obj，键值对形式{}

var Arr =  [
{key: "0", value: "00"},
{key: "1", value: "11"},
];
var obj={ };
//for in 循环方式
  for (var item in Arr){
         obj[Arr[item].key] = Arr[item].value;
  };

结果打印: