代码示例:(标识:eg_js_array_object)
<!DOCTYPE html>
<html>
<body>

<h1>JavaScript 对象</h1>

<p>JavaScript 使用名称来访问对象属性。</p>

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

<script>
var person = {firstName:"Bill", lastName:"Gates", age:19};
document.getElementById("demo").innerHTML = person["firstName"];
</script>

</body>
</html>
运行结果: