JS对象转成数组

当JS对象是键值对的情况时(Json对象),因为数组时以数字为索引的,所以只能把JS对象中的Key或者Value组成数组使用。

var obj={"one":"I am 1","two":"I am 2"};
var arr = Object.getOwnPropertyNames(obj); //arr=["one", "two"]
var arr2 = Object.keys(obj);//arr=["one", "two"]
var valArr = arr.map(function(i){return obj[i]});//["I am 1", "I am 2"]
var valArr2 = arr2.map(function(i){return obj[i]});//["I am 1", "I am 2"]
//或者2,4和3,5各自合并成一条语句
var valArr22 = Object.keys(obj).map(function(i){return obj[i]});//["I am 1", "I am 2"]

转载:https://www.cnblogs.com/fanbi/p/7264307.html

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