help with form and javascript

using the following URL  http://www.javascriptkit.com/javatutors/re.shtml
can someone explain what
this line of the code does if (document.myform.myinput.value.search

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>

enigma1234567890Asked:
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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: http://www.w3schools.com/jsref/jsref_search.asp ), with an argument that is missing from your code snippet.
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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>
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Robert SchuttSoftware EngineerCommented:
if you want the value of that field (First name) to be searched for something then use:

if (document.xxx.fname.value.search(/.../) > -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 && obj_fname.value.search(/.../) > -1) {
	// found it
}

Open in new window

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