RES: RES: [Javascript] Maxlength on textarea in XHTML

Thu Apr 14 14:41:30 CDT 2005

I was working on this problem for the original poster; I have no need
for it myself. But thanks for the info. I'll remember to search the
list archive if I ever do need it.

Shawn

On 4/14/05, Allard Schripsema <allard-schripsema at procergs.rs.gov.br> wrote:
> Shawn,
> It´s perfectly allowed to create new attributes in tags.
> Although you might not want to call this attribute maxLength to avoisd
> confusing people, we use a function very similar for the maxLength problem.
> it works, why don´t you test it?
> 
> Allard
> 
> -----Mensagem original-----
> De: javascript-bounces at LaTech.edu
> [mailto:javascript-bounces at LaTech.edu]Em nome de Shawn Milo
> Enviada em: quinta-feira, 14 de abril de 2005 16:06
> Para: [JavaScript List]
> Assunto: Re: RES: [Javascript] Maxlength on textarea in XHTML
> 
> I believe that this won't work, because it requires the maxLength to
> be set in each textarea, which the OP, I believe, wanted to avoid.
> 
> Anyway, if you set the maxLength in each textarea, then why bother adding
> JS?
> (objTA.value.length>=objTA.maxLength) can never be true, except for
> the = part, which would make no difference.
> 
> Milo
> 
> On 4/14/05, Allard Schripsema <allard-schripsema at procergs.rs.gov.br> wrote:
> > <html>
> > <head>
> > <title>Untitled</title>
> > Is this what you need?
> > </head>
> > <script>
> > function check(objTA){
> >         if (objTA.value.length>=objTA.maxLength){
> >                 objTA.value=objTA.value.substring(0,objTA.maxLength)
> >                 alert("overflow")
> >                 return false
> >         }
> > }
> > </script>
> > <body>
> > <textarea id= test onkeypress="check(this)" onblur="check(this)"
> > maxLength="10"></textarea>
> > </body>
> > </html>
> >
> > allard
> > -----Mensagem original-----
> > De: javascript-bounces at LaTech.edu
> > [mailto:javascript-bounces at LaTech.edu]Em nome de Charles Stuart
> > Enviada em: quinta-feira, 14 de abril de 2005 13:15
> > Para: [JavaScript List]
> > Assunto: [Javascript] Maxlength on textarea in XHTML
> >
> > Hello All,
> >
> > I need to set a maxlength on all of the textarea's on a site. I am
> > using XHTML 1.0 transitional. I've tried without success to implement
> > Peter-Paul Koch's code located here:
> > http://www.alistapart.com/authors/peterpaulkoch/
> >
> > My needs are simpler than what is presented on A List Apart. The
> > maxlength will always be the same value. And, don't mind having
> >         onkeypress="checkLength()"
> > in the XHTML.
> >
> > So far I have this:
> >
> > var x = document.getElementsByTagName('textarea');
> > for (var i=0;i<x.length;i++)
> > {
> >         x[i].onkeypress = checkLength(x);
> > }
> >
> > function checkLength()
> > {
> >   var howMany = document.getElementsByTagName('textarea');
> >   var max = 30;
> >
> >   if (howMany.length > max)
> >    {
> >         window.alert("You can only type 30 characters");
> >    }
> > }
> >
> > My second attempt was this:
> >
> > function checkLength()
> > {
> >         event = window.event;
> >         element = event.srcElement;
> >         var howMany = document.forms[0].element.length;
> >
> >         if (howMany.length > 30)
> > {
> >         window.alert("You can only type 300 characters");
> > }
> > }
> >
> > Thank you for any help. Let me know if I should put an example up.
> >
> > best,
> >
> > Charles
> >
> > _______________________________________________
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> > Javascript at LaTech.edu
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> >
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> >
> 
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