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+3 A:

var input = document.createElement("input");

input.setAttribute("type", "hidden");

input.setAttribute("name", "name_you_want");

input.setAttribute("value", "value_you_want");

//append to form element that you want .
document.getElementById("chells").appendChild(input);

Haim Evgi 2009-06-16 11:09:47

The forms collection is more appropriate than getElementById for a named form and this all depends on the execution order of the JS vs the DOM loading, but essentially this is the right approach

annakata 2009-06-16 11:17:28

But i just try to use its said the form element is null

joe 2009-06-16 11:33:01

As David pointed out, make sure you are executing this *after* the DOM has loaded. Try using the onload event for starters.

annakata 2009-06-16 11:38:57

at the same point .. document.chells is working but document.getElementById(chells) return null . What would be problem . How to reslove this

joe 2009-06-16 11:49:46

I found the Issue .. Its Difference between name and id

joe 2009-06-16 12:21:46

in the original i wrote this :'give to form element id attribute what you want' because i see that u have only name

Haim Evgi 2009-06-16 12:55:53

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Create a hidden field in JavaScript

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