Login | Register   
LinkedIn
Google+
Twitter
RSS Feed
Download our iPhone app
TODAY'S HEADLINES  |   ARTICLE ARCHIVE  |   FORUMS  |   TIP BANK
Browse DevX
Sign up for e-mail newsletters from DevX


Tip of the Day
Language: HTML/JavaScript
Expertise: Beginner
Dec 18, 2006

Constrain an HTML Input Box to Uppercase

The easiest way to constrain an HTML input box to uppercase is to use the STYLE attribute inside the INPUT tag.

Suppose you have the following code:


<input type="text" name="big" style="text-transform:uppercase;">
When you type usd, it will appear on screen as USD, but it will be submitted to the server as usd, since STYLE only affects the appearance, not the original data. Here's the workaround:

<input type="text" name="realbig" style="text-transform:uppercase;" on keyup="javascript:this.value=this.value.toUpperCase();">
This raises another question: why not remove STYLE and just use the JavaScript? The answer is: You can, but users will see the characters "flash" from lower to upper case as they type, which is irritating."

Loekito Mulyadi
 
Comment and Contribute

 

 

 

 

 


(Maximum characters: 1200). You have 1200 characters left.

 

 

Sitemap