Posting A Hidden Field To A Form In A Document Using Javascript

Jul 23, 2005

I need to add an input hidden field to an existing form (post).

I have tried a couple things like adding the '<INPUT type=hidden
name=idSelectedURL value=http://server/documents>' to the innerHTML of
the form but it fails. ie

var sField = "<INPUT type=hidden name=idSelectedURL
value=http://server/documents>";
frm.innerHTML = frm.innerHTML + sField;


also, trying to add an element to the form such as:
var frm = document.getElementById("idForm");
var oField = frm.createElement ('input');
oField.type ="hidden";
oField.name = "idSelectedURL";
oField.value ="http://server/documents";

none of these work and give me a javascript error.

I don't think the createElement method can be used from the form
object, only from the document object. still could not get it working.

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