主页
JavaScript
JavaScript ECMAScript 5 教程
tryjs_object_defineproperty
运行 ❯
×
更改方向
保存代码
更改主题
<!DOCTYPE html> <html> <head> <meta content="text/html; charset=iso-8859-2" http-equiv="Content-Type"> </head> <body> <h2>JavaScript defineProperty()</h2> <p id="demo"></p> <script> // 创建一个对象： var person = { firstName: "John", lastName : "Doe", language : "NO", }; // 改变一个属性： Object.defineProperty(person, "language", { value: "EN", writable : true, enumerable : true, configurable : true }); // 枚举属性 txt = ""; for (var x in person) { txt += person[x] + "<br>"; } document.getElementById("demo").innerHTML = txt; </script> </body> </html>