JavaScript Function to Validate Email Addresses (valid email address)

This function validates an email address, returning True if it is a properly formatted email address, False if it is not.

/*

	ValidEmail - true for valid email, false for invalid

*/

function ValidEmail(EmailAddr) {

	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/;

	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/;

	

	var SpecChar="!#$%^&*()'+{}[]\|:;?/><,~`" + "\"";

	var frmValue = new String(EmailAddr);

	var len = frmValue.length;

	

	if( len < 1 ) { return false; }

	for (var i=0;i	{

				temp=frmValue.substring(i,i+1)

				if (SpecChar.indexOf(temp)!=-1)

		 		{

					return false;

				}

	}	

	

	if(!reg1.test(frmValue) && reg2.test(frmValue)) 

	{ 

		return true;

	}

	

	return false;

}