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<!DOCTYPE html> <html> <body> <h2>JavaScript Object.getOwnPropertyNames()</h2> <p>此示例列出对象的属性。</p> <p id="demo"></p> <script> // 创建一个对象： var person = { firstName: "John", lastName : "Doe", language : "EN" } // Change Property Object.defineProperty(person, "language", {enumerable:false}); // Display Properties document.getElementById("demo").innerHTML = Object.getOwnPropertyNames(person); </script> </body> </html>