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 alertId() { var txt="Id: " + document.getElementById("myButton").id txt=txt + ", type: " + document.getElementById("myButton").type alert(txt) document.getElementById("myButton").disabled=true } </script> </head> <body> <form> <button id="myButton" onClick="alertId()">请点击我！</button> </form> </body> </html>