help with form and javascript

using the following URL
can someone explain what
this line of the code does if (

are (myinput ,  value and search )
supposed to be something value and what would it read for this form

<form name="xxx" onsubmit="return validateX();" method="post">

<table width="100%" border="0">
<tr><td>Firstname:</td><td><input type="text" name="fname" id="fname" /></td></tr>

Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Robert SchuttSoftware EngineerCommented:
There should be a form with the name "myform", in that an input (type "text" or maybe "hidden"). The value of that is checked against a regular expression (example: ), with an argument that is missing from your code snippet.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
enigma1234567890Author Commented:
I know the regex just stuck on the look at this line
tr><td>Firstname:</td><td><input type="text" name="fname" id="fname" /></td></tr>
Robert SchuttSoftware EngineerCommented:
if you want the value of that field (First name) to be searched for something then use:

if ( > -1)
   // found it!

Open in new window

As there is also an id on that field you can also use:

var obj_fname = document.getElementById('fname');
if (obj_fname != null && > -1) {
	// found it

Open in new window

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.