W3C TIY
（请在下面的文本框中编辑您的代码，然后单击此按钮测试结果。）
编辑您的代码：
<html> <head> <script type="text/javascript"> function whichButton(event) { if (event.button==2) { alert("You clicked the right mouse button!") } else { alert("You clicked the left mouse button!") } } </script> </head> <body onmousedown="whichButton(event)"> <p>Click in the document. An alert box will alert which mouse button you clicked.</p> </body> </html>
查看结果: