Regular Expression For Email validation with \+ 1

[mts176]

I recently learned about the wonderful Regular Expressions, so I am not even what you would consider proficient in it.

My question is how do I set up a Regex that will validate an email address with a "+" in it.

EX: my+Email@No+Regex.com

I haven't seen an email like this but my boss wants to make sure people that are using them can access our site. Any help would be much appreciated.

 

[tsuji]

I feel traps in the question. How about this balancing specificity and complexity?
[tt]var re=/^[\w-+\.]{1,}\@([\da-zA-Z-+]{1,}\.){1,}[\da-zA-Z-+]{2,3}$/i;[/tt]

 

[mts176]

This is the code I am using

    if(email.length <= 0)
	{
	  return true;
	}
    var splitted = email.match("^(.+)@(.+)$");
    if(splitted == null) return false;
    if(splitted[1] != null )
    {
      var regexp_user=/^\"?[\w-_\.]*\"?$/;
      if(splitted[1].match(regexp_user) == null) return false;
    }
    if(splitted[2] != null)
    {
      var regexp_domain=/^[\w-\.]*\.[A-Za-z]{2,4}$/;
      if(splitted[2].match(regexp_domain) == null) 
      {
	    var regexp_ip =/^\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\]$/;
	    if(splitted[2].match(regexp_ip) == null) return false;
      }// if
      return true;
    }

Changed to

 var regexp_user=/^\"?[\w-_\+\.]*\"?$/;
var regexp_domain=/^[\w-\+\.]*\.[A-Za-z]{2,4}$/;

We have 3 seperate pages named the same thing. The one I changed was 1 of 2 wrong ones that are no longer used. This was just a case of not paying close enough attention to detail. Thank you tsuji. You replies have always helped me out.