fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> 名: <input type="text" id="myText" value="Mickey"> <p>点击按钮修改文本域的默认值。</p> <button type="button" onclick="myFunction()">点我</button> <script> function myFunction() { document.getElementById("myText").defaultValue = "Goofy"; } </script> </body> </html>
运行结果