Simple Javascript?

Question

Hi, I have this Javascript, but to be honest, I'm exactly sure what it means. I know that it's an email validator function, but what is the "elements" part? What does "(!(emailPattern.test(email)))" mean?

Thanks again for all the brains out there!!!

function emailTest(emailText)
{
var email = emailText.value;
var emailPattern = /^.+@.+\..{2,}$/;
if (!(emailPattern.test(email)))

{
alert("Please enter a valid email address.");
document.myForm.elements[1].focus();
}
}

Answer 1

The "elements" part is part of the DOM.

document is your whole page
myForm is a particular form within document
elements is an array of form elements within myForm (e.g. text fields, checkboxes, etc.)
elements[1] is the second form element in the array.

The emailPattern.test part is checking to see if the entered email address is formed correctly - e.g. [e-mail].

Answer 2

it's using a regular expression to test for certain chars in the e-mail string.