运行 ❯
建立您
自己的
网站
×
改变方向
保存代码
改变主题，深色/浅色
前往 Spaces
<!DOCTYPE html> <html> <body> <h1>JavaScript Objects</h1> <h2>The Object.defineProperties() Method</h2> <p>This example adds a new property to an object.</p> <p id="demo"></p> <script> const person = { firstName: "John", lastName: "Doe" }; Object.defineProperties(person, { language: {value: "en"}, year: {value: "Hello"} }); // Display the properties document.getElementById("demo").innerHTML = person.language + " " + person.year; </script> </body> </html>
