W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<html> <head> <script type="text/javascript"> function changeSize() { document.getElementById("password1").size=40 } </script> </head> <body> <form> <input type="password" id="password1" /> <input type="button" id="button1" onclick="changeSize()" value="Change size of the password field" /> </form> </body> </html>