Topic awaiting preservation: special characters

Hi.
I'm looking for a way to avoid the user from enter some of the characters using the <input type=text ...
for example if the text should be numeric I would like to avoid the user from using all non-numeric characters.

Thanks in advanced
Yossi.

Try here: Form Validation Links



Cell number: 698

I'm not talking about form validation and not about validate the text after the onChange event occurred, I am talking about online validation.

And... how exactly do you define "online validation?"

onkeydown, onkeyup

jeez that's interesting
try something like this it works in IE I put a nod to Netscape but didn't test it.

document.onkeypress=checkinput;

if (window.captureEvents) {

	window.captureEvents(Event.KEYPRESS);

	window.onkeypress=pressed;

}





detect = false



function keygrab(elm) {

	detect = true;

	inputName = elm.name

	

}

function nograb() {

	detect = false;

	

}

function checkinput(e) {

	if (detect) {

		if (!e) var e = window.event;

		if (e.keyCode) code = e.keyCode;

		else if (e.which) code = e.which;

		var character = String.fromCharCode(code);

		switch(inputName) {

			// Put your seperate validation routines here

			case "testing":

				alert(character);

				

		}

	

	} 

}





</script>



<input type="text" name="testing" onFocus="keygrab(this)" onBlur="nograb()";>

.:[ Never resist a perfect moment ]:.

[This message has been edited by bitdamaged (edited 11-26-2002).]

It looks nice.
I was trying to use the <input type="text" onkeydown="Validate(this)"...
But the first letter was skipped.

You should still validate the input on the server side, just in case your user has Javascript turned off, or is using a Javascript-inept browser. It's like wearing a belt when you've already got suspenders: if your suspenders break, you've still got a safety buffer between your unit and the cold harsh world.

I wanted it to be first validation layer, the second layer will be on submit and the third one will be server side validation.
I know that there are some unhandaled problems like what if the user choose to paste into.