点击运行
<!DOCTYPE html> <html> <body> <h1>JavaScript Object.defineProperty()</h1> <p>本例修改了一个属性值。</p> <p id="demo"></p> <script> // 创建对象： var 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>
运行结果
