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 changeMargin() { document.getElementById("p1").style.marginLeft="32px"; } </script> </head> <body> <input type="button" onclick="changeMargin()" value="Change the left margin of a paragraph" /> <p>This is a paragraph</p> <p id="p1">This is a paragraph</p> <p>This is a paragraph</p> </body> </html>