Javascript屏蔽F5，刷新，右键，Alt键

singlerwong | 2008-05-19 17:04:43 阅读：5735

function DisableF5(){
with (event){
// F5 and Ctrl+R
if (keyCode==116 || (ctrlKey && keyCode==82)){
event.keyCode = 0;
event.cancelBubble = true;
return false;
}
}
}
document.onkeydown = DisableF5;

function DisableF5(){ 
   with (event){ 
           // F5 and Ctrl+R 
     if (keyCode==116 || (ctrlKey && keyCode==82)){ 
       event.keyCode = 0; 
       event.cancelBubble = true; 
       return false; 
     } 
   } 
} 

document.onkeydown = DisableF5;

function document.onkeydown()
{
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;
}
}

function document.onkeydown() 
{ 
   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; 
      } 
}

一，js屏蔽浏览器（IE和FireFox）的刷新功能

document.onkeydown=function()
{
if ((window.event.keyCode==116)|| //屏蔽 F5
(window.event.keyCode==122)|| //屏蔽 F11
(window.event.shiftKey && window.event.keyCode==121) //shift+F10
)
{
window.event.keyCode=0;
window.event.returnValue=false;
}
if ((window.event.altKey)&&(window.event.keyCode==115))
{
//屏蔽Alt+F4
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;
}
}

document.onkeydown=function()
{
  if ((window.event.keyCode==116)|| //屏蔽 F5
      (window.event.keyCode==122)|| //屏蔽 F11
      (window.event.shiftKey && window.event.keyCode==121) //shift+F10
     )
     { 
          window.event.keyCode=0;
          window.event.returnValue=false;
     } 
  if ((window.event.altKey)&&(window.event.keyCode==115))
     { 
         //屏蔽Alt+F4
         window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
         return false;
     }  
}

二，js屏蔽浏览器右键功能

if (window.Event)
document.captureEvents(Event.MOUSEUP);
function nocontextmenu()
{
event.cancelBubble = true
event.returnValue = false;
return false;
}
function norightclick(e){
if (window.Event){
if (e.which == 2 || e.which == 3)
return false;
}
else
if (event.button == 2 || event.button == 3){
event.cancelBubble = true
event.returnValue = false;
return false;
}
}
document.oncontextmenu = nocontextmenu; // for IE5+
document.onmousedown = norightclick; // for all others

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