I have a script written in JavaScript to Validate Canadian Postal Codes using Regex, however it does not seem to be working. Here is the script:

If statement:

if (myform.zip.value == "" || myform.zip.value == null || myform.zip.value == "Postal Code" || myform.zip.value.length < 12 ) {
    alert("Please fill in field Postal Code. You should only enter 7 characters");
    myform.zip.focus();
    return false;
  }

Function:

function okNumber(myform) {
  var regex = /^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1} *\d{1}[A-Z]{1}\d{1}$/;
  if (regex.test(myform.zip.value) == false) {
    alert("Input Valid Postal Code");
    myform.zip.focus();
    return false;
  }

  return true;
}