javascript to validate an entry is in URL format.

[HubCapped]

Hello
I was wondering if anyone could possibly help, im looking to create a javascript function that will validate whether or not a user entry into a text element of form is actually in the correct URL format.
This is my form code at the moment.

<input type="text" size="70" id="inurl" name="inurl" value="">
<input type="button" value="Request URL" id="suburl" onClick="document.Assignment1.updateURL(document.getElementById('inurl').value)">
</form>

Thanks

 

[tsdragon]

Try searching this forum for "regular expression" and "URL".


Tracy Dryden

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

 

[adam0101]

What is considered to be a "valid" url is very subjective. Try plugging one of these regex patterns that fits your needs into something like this:

if(document.formName.fieldName.value.search(/regularExpressionGoesHere/) > -1){
  alert('Valid URL!');
}

Adam