禁止刷新网页、防止刷新网页、禁止后退等操作的代码

转载

Bensantan 2014-10-15 10:08:21

<html>   
 <head>   
 <meta   http-equiv="Content-Type"   content="text/html;   charset=gb2312">   
 <noscript><meta   http-equiv="refresh"   content="0;url=about:noscript"></noscript>   
 <title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title>   
 </head>   
 <body>   
 <script>  
 //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键     
 function   document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键   
 function   window.onhelp(){return false}       //屏蔽F1帮助   
 function   document.onkeydown(){   
     if((window.event.altKey)&&   
       ((window.event.keyCode==37)||            //屏蔽Alt+方向键←   
       (window.event.keyCode==39))){            //屏蔽Alt+方向键→
            alert("不准你使用ALT+方向键前进或后退网页！");   
            event.returnValue=false;    
       }         if((event.keyCode==8)||                    //屏蔽退格删除键    
       (event.keyCode==116)||                   //屏蔽F5刷新键   
       (event.ctrlKey && event.keyCode==82)){   //Ctrl+R   
            event.keyCode=0;   
            event.returnValue=false;   
       }   
       if(event.keyCode==122){event.keyCode=0;event.returnValue=false;}    //屏蔽F11   
       if(event.ctrlKey && event.keyCode==78)event.returnValue=false;      //屏蔽Ctrl+n   
       if(event.shiftKey && event.keyCode==121)event.returnValue=false;    //屏蔽shift+F10   
       if(window.event.srcElement.tagName=="A" && window.event.shiftKey)     
          window.event.returnValue=false;       //屏蔽shift加鼠标左键新开一网页   
       if((window.event.altKey)&&(window.event.keyCode==115)){             //屏蔽Alt+F4    
          window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");   
          return false;   
       }   
   }   
 </script>   
 屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键   
 </body>   
 </html>