[Javascript] Q on interuppting char entry

[Michael Dougherty]

set onkeypress to false?  how will you delete the existing contents so you
can reword your sentences to make them short enough to fit?  Doing that
would be like making the enabled property false, and making the control
useless as an input device.

can you have the form event handler trap onkeydown, then get the id of the
firing object to determine the maxlength and simply return false if the
length is reached? (and you're not keying a del/bksp)

-----Original Message-----
From: javascript at LaTech.edu [mailto:javascript at LaTech.edu]
Sent: Saturday, April 12, 2003 2:09 PM
To: javascript at latech.edu
Subject: Re: [Javascript] Q on interuppting char entry


I admire your script, but it's to messy for me.
I vould rather simply set the maxLength var for the text input and then
retrieve the length from last onkeyup event to se if the maxLength is met,
and then set the onkeypress to false, -no other character will ocur and
you
will get rid of that 'flash' forever.

So, try to return the keypress to false after the char limit is met.

Cheers!



>>From: "Walter Torres" <walter at torres.ws>
>>Reply-To: "[JavaScript List]" <javascript at LaTech.edu>
>>To: "[JavaScript List]" <javascript at LaTech.edu>
>>Subject: [Javascript] Q on interuppting char entry
>>Date: Fri, 11 Apr 2003 16:50:41 -0500
>>
>>I am trying to create a method that limits the character count in a
>>TEXTAREA, like MAXLENGTH does in TEXT and PASSWORD.
>>
>>What I have works (see below), to a point.
>>
>>What it does is allow another character to flash in the box, and then it
>is
>>removed.
>>
>>Anyone have any idea on how to interrupt this character entry at this
>>point,
>>thus no character flash?
>>
>>Thanks
>>
>>Walter
>>
>>=================
>>
>>var objTA = [favorite method to get Element Reference]
>>
>>objTA.onkeypress = setLimit;
>>objTA.onkeydown  = setLimit;
>>objTA.onkeyup    = setLimit;
>>
>>function setLimit ( )
>>{
>>    // Get name of given TEXTAREA
>>    var strName = this.id;
>>
>>    // What is the limit set at for this TEXTAREA
>>    var intLimit = new Number ( this.getAttribute("maxlength") );
>>
>>    // How many characters do we have yet?
>>    var intCharRemaing = new Number ( intLimit - this.value.length );
>>    if ( intCharRemaing < 0 )
>>    {
>>       this.value = this.value.substring( 0, intLimit  );
>>       intCharRemaing = 0;
>>    }
>>}
>>
>>_______________________________________________
>>Javascript mailing list
>>Javascript at LaTech.edu
>>https://lists.LaTech.edu/mailman/listinfo/javascript


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