本文实例讲述了JS实现从对象获取对象中单个键值的方法。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>www.qb5200.com JS获取对象中单个键值</title>
</head>
<body>
<script>
window.onload = function() {
var add = document.getElementById("addArr")
var arr = [
{aaa: 51, bbb: 174},
{aaa: 270, bbb: 174}
];
obj = {
xxx: 51,
yyy: 174,
zzz: 175,
aaa: 1,
bbb: "abaababababa",
ccc: 545,
ddd: 2455
};
var aObj = {};
function addArr() {
aObj.aaa = obj.aaa
aObj.bbb = obj.bbb
};
addArr();
add.addEventListener("click", function() {
arr.push(aObj);
console.log(arr);
});
}
</script>
<div>
<button id="addArr">ADD</button>
</div>
</body>
</html>
运行结果：
希望本文所述对大家JavaScript程序设计有所帮助。
