Regex validation for email addresses not working in client script

[Tomi Corigliano]

Since I cannot use the Question Regular Expression for a multi line text variable in a catalog item, I'm trying to do the reg ex validation for email addresses through a catalog client script. However I can't get it to work properly.

Can anyone please help me to get the right value for the regex. I tried several combinations

function onChange(control, oldValue, newValue, isLoading) {
   if (isLoading || newValue == '') {
      return;
   }
	
	var regex = '-----BEGIN EMAIL VALIDATION-----^([a-zA-Z0-9])$-----END EMAIL VALIDATION-----';
	//Regex for RSA key (Private part)
	if(!newValue.match(regex)){  
		g_form.addErrorMessage('Please enter valid email addresses.');
	}
   
}

[Tomi Corigliano · Accepted solution]

Thank you @Community Alums 

I had to alter the code a little bit to have it work:

if (!newValue.match(/^[a-zA-Z0-9\_\-\.]+@[a-zA-Z0-9\_\-\.]+\.[a-zA-Z]{2,5}$/)) {
   g_form.showFieldMsg("google_group_members_00","Please enter a valid email ID","Error");
}