在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(cainiaoplay.com)</title>
</head>
<body>

<p>修改 JSON 对象数组值。</p>

<p id="demo"></p>

<script>

var myObj, i, x = "";
myObj = {
	"name":"网站",
	"num":3,
	"sites":[ "Google", "Codexy", "Taobao" ]
};
 myObj.sites[1] = "Github";

for (i in myObj.sites) {
    x += myObj.sites[i] + "<br>";
}

document.getElementById("demo").innerHTML = x;

</script>

</body>
</html>

源代码

动行结果