1 <button  id="exitSystem" onclick="CloseWebPage()">关闭</button>
 2         <script>
 3             function CloseWebPage() {
 4                 if (navigator.userAgent.indexOf("MSIE") > 0) {
 5                     if (navigator.userAgent.indexOf("MSIE 6.0") > 0) {
 6                         window.opener = null; window.close();
 7                     }
 8                     else {
 9                         window.open(‘‘, ‘_top‘); window.top.close();
10                     }
11                 }
12                 else if (navigator.userAgent.indexOf("Firefox") > 0) {
13                     window.location.href = ‘about:blank ‘; //火狐默认状态非window.open的页面window.close是无效的
14                     //window.history.go(-2);
15                 }
16                 else {
17                     window.opener = null;
18                     window.open(‘‘, ‘_self‘, ‘‘);
19                     window.close();
20                 }
21             }
22         </script>

1 <button style="margin-left: 500px" onclick="CloseWebPage()">退出</button>
2 <script>
3     function CloseWebPage() {
4         open(location, ‘_self‘).close();
5     }
6 </script>