I want to disable F8 key on my web page. Is there any way I can disable it using jquery or any associated plugins or just javascript??
Thanks in advance... :)
blasteralfred
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3 Answers
Like this Disable F5 key in Safari 4
but using keyCode 119:
<script>
var fn = function (e)
{
if (!e)
var e = window.event;
var keycode = e.keyCode;
if (e.which)
keycode = e.which;
var src = e.srcElement;
if (e.target)
src = e.target;
// 119 = F8
if (119 == keycode)
{
alert('nope')
// Firefox and other non IE browsers
if (e.preventDefault)
{
e.preventDefault();
e.stopPropagation();
}
// Internet Explorer
else if (e.keyCode)
{
e.keyCode = 0;
e.returnValue = false;
e.cancelBubble = true;
}
return false;
}
}
document.onkeypress=document.onkeydown=document.onkeyup=fn
</script>
5 Comments
Alfred
it worls when i click page.. but not working when i click address bar or i click inside pdf..
mplungjan
That is correct. PDF will not respond to any javascript changes in the page. A PDF is like a black hole, only accessible by Acrobat or whatever reader you have installed
Alfred
yea i got it
:) .... any way thanks for your support.. let me dig deep into it.. Do you know any browser supported reader other than adobe reader which prevent pdf saving??mplungjan
You can disable saving in the PDF itself.
James
If you're trying to stop people from copying your PDF there is no way that Javascript will help you. The PDF is already downloaded and saved on the user's machine (albeit in a temp file) when they view it. Any semi-power user can just open up his temp files, locate the last downloaded PDF, rename it and send it to all his friends.
Have you tried something like this?
$(document).keydown(function(e){
if(e.which === 119){
return false;
}
});
i created a jsfiddle sandbox where you can test it (works):
Comments
The following code works on most browser whereas I haven't found any incompatible one yet. Let me know if it doesn't work.
The key is to re-map target event to any other original event of trivial key, i.e., make that Fn key behave as normal key.
$(document).bind("keydown", function (evt){
var keycode = (evt.keyCode?evt.keyCode:evt.charCode);
//alert(keycode);
switch(keycode){
case 119: //F8 key on Windows and most browsers
case 63243: //F8 key on Mac Safari
evt.preventDefault();
//Remapping event
evt.originalEvent.keyCode = 0;
return false;
break;
}
});
Reference on key code and explanation on cross browser issue can be found here: quirksmode
