一，效果圖。javascript
二，代碼。html
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>JavaScript void</title> <script type="text/javascript"> <!-- //--> </script> <script type="text/javascript"> <!-- function getValue() { var a, b, c; a = void(b = 5, c = 7); document.write('a = ' + a + ' b = ' + b + ' c = ' + c); } //--> </script> <script type="text/javascript"> <!--//--> </script> </head> <body> <a href="javascript:void(0)">單擊此處什麼也不會發生</a> <p>點擊如下連接查看結果：</p> <a href="javascript:void(alert('Warning!!!'))">點我!</a> <p>點擊如下按鈕查看結果：</p> <form> <input type="button" value="點我" onclick="getValue();" /> <p>點擊如下連接查看不一樣效果：</p> <a href="javascript:void(0);">點我沒有反應的!</a> <br> <a href="#pos">點我定位到指定位置!</a> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <p id="pos">尾部定位點</p> </body> </html>
參考資料：《菜鳥教程》java