1.取得对象中的值

<script>

var obj = {

"a":"nihoa", //和这样写法的区别

b:"wobuhoa", //注意这样的写法

"c":"lalala"

}

var arr = ['a',"b",3,4,5]

var zzz = arr[1];

console.log(zzz); //取到b

console.log(obj.zzz); //这样取到lalala

console.log(obj[zzz]) //正确取到wobuhoa

console.log(obj["a"]) //正确取到nihoa

console.log("___________________________________________")

console.log(obj.a); //nihoa

console.log(obj.b); //wobuhoa

console.log(obj.c); //lalala

 

</script>