js dictionary字典 遍历

var dic={A:"AA",B:"BB",C:"CC"} //不能length去for循环(length:undefined)

dic["D"]="DD"; //新增键值对

var tmp=dic["D"]; //经过key获取值

for (var key in dic) {
　　var item = dic[key];

　　console.log(item); //AA,BB,CC,DD

}

 

 

 

From:https://www.cnblogs.com/xuejianxiyang/p/10221930.html