<div>
No you CAN'T. User need to be the master of its browser, not the hacker behind the screen<br />
<br />
But you can :<br />
event.preventDefault();<br />
append an other character of your choice
</div>


No you CAN'T. User need to be the master of its browser, not the hacker behind the screen

But you can :
event.preventDefault();
append an other character of your choice

<div>
Alex,<br />
<br />
Thank you for an almost perfect solution... I'm using jquery, so for some reason I had to change the evt.cancelBubble to use evt.preventDefault(); &nbsp;Otherwise, I got the original character and the one I was adding! &nbsp;(simple lower to upper case at the moment).<br />
<br />
Thank you... This makes filtering user input easy!
</div>


Alex,

Thank you for an almost perfect solution... I'm using jquery, so for some reason I had to change the evt.cancelBubble to use evt.preventDefault();  Otherwise, I got the original character and the one I was adding!  (simple lower to upper case at the moment).

Thank you... This makes filtering user input easy!

<div>
<blockquote>
seriously?!? ;-)
</blockquote>
<b>input.value += &quot;,&quot;;<br />
</b><br />

<blockquote>
I had to change the evt.cancelBubble to use evt.preventDefault();
</blockquote>
<br />
<b>But you can :<br />
event.preventDefault();<br />
append an other character of your choice</b><br />
<br />
Ahem...
</div>


> seriously?!? ;-)

input.value += ",";



> I had to change the evt.cancelBubble to use evt.preventDefault();


But you can :
event.preventDefault();
append an other character of your choice

Ahem...

<div>
<blockquote>
But you can :<br />
event.preventDefault();<br />
append an other character of your choice 
</blockquote>
<br />
Ahem...<br />
<br />
Btw: You should really provide a little bit more information that might guide the asker to a suitable solution ;-)
</div>


> But you can :
> event.preventDefault();
> append an other character of your choice


Ahem...

Btw: You should really provide a little bit more information that might guide the asker to a suitable solution ;-)

<div>
<div class="content wysiwyg-content">
Can javascript alter the character value received by a keypress event? &nbsp;keypress can filter out characters by returning true or false, but the question is can it Alter the character returned for display in the textbox?
</div>
</div>


Can javascript alter the character value received by a keypress event?  keypress can filter out characters by returning true or false, but the question is can it Alter the character returned for display in the textbox?

Is it possible to alter the charCode received during a keypress or keydown events

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.