<!DOCTYPE html>
<html>
<body>
<h1>使用括号表示法访问 JavaScript 对象：</h1>
<p id="demo"></p>
<script>
var myObj, x;
myObj = { name: "Bill Gates", age: 62, city: "Seattle" };
x = myObj["name"];
document.getElementById("demo").innerHTML = x;
</script>
</body>
</html>