Uppercase in textbox?

I want to use only uppercase characters in the textbox. How do i do this?

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Michel PlungjanIT ExpertCommented:
<INPUT TYPE="text" onChange="var t = '' + this.value; this.value = t.toUpperCase()">


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
rick_mulderAuthor Commented:
object doesn't support this property or method..

Could you try it? Maybee i'm doing something wrong!
Michel PlungjanIT ExpertCommented:
Works for me in IE4.01 and NS 4.7 on NT4

<INPUT NAME="txtField" TYPE="text" onChange="var t = '' + this.value; this.value=t.toUpperCase()">
<INPUT TYPE="button" onClick="alert(this.form.txtField.value)" VALUE="test">

Be advised that var t = ''
has two single quotes and not one double quote

rick_mulderAuthor Commented:
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.