51help TIY
码：
<html> <head> <script type="text/javascript"> function isKeyPressed(event) { if (event.shiftKey==1) { alert("The shift key was pressed!") } else { alert("The shift key was NOT pressed!") } } </script> </head> <body onmousedown="isKeyPressed(event)"> <p>按下了 shift 键。</p> </body> </html>
查看结果: