html运行实例（js_object_es5

代码示例：（标识：js_object_es5_1）

<!DOCTYPE html>
<html>
<body>

<h1>JavaScript Object.defineProperty()</h1>

<p>本例会更改属性值。</p>

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

<script>
// 创建对象：
const person = {
  firstName: "Bill",
  lastName: "Gates",
  language: "EN" 
};

// 更改属性
Object.defineProperty(person, "language", {value:"ZH"})
document.getElementById("demo").innerHTML = person.language;
</script>

</body>
</html>