form validation question

[dude333]

Hi,

Can anyone tell me the most effective way to validate the form input from one field under the following criteria.

The data inputted must be in the range 00-24. ie, I do not want anyone to input 9 it must be 09.

Obviously I could write a large set of if statements to check input, but is there a more effective way to do this?

I have found info on RegExp's but no clear example using numbers like this. Does anyone have a link to a good example of RegExp statement that checks numbers?

Thanks.

 

[jemminger]

function isValid(s) {
  return /^(0|1)[0-9]$|^2[1-4]$/.test(s);
}

<input type="text" onblur="alert(isValid(this.value));" />

=========================================================
-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); }

 

[dude333]

Thanks for that, just what I was looking for.

Cheers.