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Subject:
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Validate multiple email addresses...
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Posted By:
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mat41
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Post Date:
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3/9/2006 12:21:51 AM
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Hello JS ers
I use this code to validate an email address:
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email=document.addUser.eMail.value;
var expression=/^([a-zA-Z0-9\-\._]+)@(([a-zA-Z0-9\-_]+\.)+)([a-z]{2,3})$/;
if(!(expression.test(email)) )
{
alert("Please enter a valid email address (50 chars max)");
document.addUser.eMail.select();
document.addUser.eMail.focus();
return false;
}
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It works very nicely. I would help altering it to validate several addresses. These addresses wil come in the form of a commer delimites string from an <input type="text"> form element.
Im am no JS guy. I would appreciate some assistance.
TYIA
Wind is your friend
Matt
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Reply By:
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adam_kahtava
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Reply Date:
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3/9/2006 1:47:28 AM
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Try using the Javascript Split() Function, then loop through the array validating against your regular expression.
Example:
var temp = new Array();
temp = b.split(',');
Taken from: http://www.quirksmode.org/js/strings.html#split
- A.Kahtava
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Reply By:
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mat41
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Reply Date:
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3/9/2006 8:11:36 PM
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Thanking you.
This was the logical option that first came to mind. I thought a JS guru may have a more efficient option which accounts for a commer or a semicolon address seperator, unlimited addresses being submitted etc.. (Oh, and had solved thois solution before)
TYIA
Wind is your friend
Matt
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Reply By:
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mat41
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Reply Date:
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3/15/2006 10:54:13 PM
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I have been assisted with this one, the solution is:
var expression=/^(([a-zA-Z0-9\-\._]+)@(([a-zA-Z0-9\-_]+\.)+)([a-z]{2,3})([,;]\W?(?!$))?)+$/;
Adam - Thankyou I apreciate your input, this was what i was meaning by a JS Guru's method.
Wind is your friend
Matt
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Reply By:
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adam_kahtava
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Reply Date:
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3/15/2006 11:00:45 PM
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Interesting...
Thanks for the post. :)
- A.Kahtava
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Reply By:
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mat41
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Reply Date:
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3/15/2006 11:17:27 PM
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Yes interesting indeed. Reg Ex is well outside my area of expertise.
FYI : This syntax works however insists the address seperator is a commer and there are no spaces between each addresss each seperator:
var expression=/^(([a-zA-Z0-9\-\._]+)@(([a-zA-Z0-9\-_]+\.)+)([a-z]{2,3})(,(?!$))?)+$/;
The version I posted as the solution in my previous post allows a semicolon or a commer and allows a space between each address and the seperator - IMO a very useful piece of code, have a nice day.
Wind is your friend
Matt
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