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troubleshooting Question

Regex that allow empty

Avatar of lenamtl
lenamtlFlag for Canada asked on
JavaScript
4 Comments1 Solution427 ViewsLast Modified:
Is this possible to allow empty field to this regex verification?
This is an email field javascript verification, this field is not mandatory
So if I don't fill this field I got 'Email address is not correct'

var ad = new RegExp("^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$");
    if (!ad.test(f.email.value)) {
      jAlert("Email address is not correct.");
      return false;
    }