textarea character counting question (javascript)

[pduncan]

Hi everyone,

I have a countChars function (javascript) for my textarea box: The
functions uses a textarea, and textbox. User is only allowed to type
up to "maxLength" characters in the textarea and the characters
remaining is displayed in the textbox.

function countChars(controlToValidateRef,
maxLength,outputControlRef, errorMessage,
enableClientSideRestriction,showJavascriptAlert,showCharacterCount)
{
var countString = maxLength - controlToValidateRef.value.length;
if (countString < 0) {
if (enableClientSideRestriction) {
controlToValidateRef.value =
controlToValidateRef.value.substring( 0, maxLength );
if (showJavascriptAlert) {
alert(errorMessage);
}
return false;
}
} else {
if (showCharacterCount) {
outputControlRef.value = countString;
}
}
}

I'm using this function for the following events
(onkeyup,onChange,OnFocus,OnBlur) of the textarea

This works in every scenario, except when a user uses the browser to
paste in text. Any way to detect this???

Thanks,
Paul

 

[Martin Honnen]

This works in every scenario, except when a user uses the browser to
paste in text. Any way to detect this???

IE (at least on Win) has event handlers like onbeforepaste and onpaste:
<http://msdn.microsoft.com/library/d...thor/dhtml/reference/events/onbeforepaste.asp>
<http://msdn.microsoft.com/library/d...hop/author/dhtml/reference/events/onpaste.asp>

Mozilla has the oninput event handler which fires whenever input occurs,
including the user pasting stuff.