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Thread: [2.0][CLOSED] Ext.get/Ext.getDom does not fix IE's document.getElementById bug

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  1. #1
    Ext User
    Join Date
    Dec 2007
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    Default [2.0][CLOSED] Ext.get/Ext.getDom does not fix IE's document.getElementById bug

    I ran into a problem with my code today and found it to be one of IE's many bugs. In IE, the document.getElementById function returns by the name of an element before it looks for the id of an element. I was using Ext.get in my code and found the same bug. I would think that it should be something that Ext would remove since an IE bug should not alter how Ext works. I hope that this could be fixed.

    Here is an example:

    HTML Code:
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
    <html xmlns="" xml:lang="en-us" lang="en-us">
            <title>Ext getElementById bug</title>
            <meta http-equiv="Content-Language" content="en-us" />
            <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
            <meta http-equiv="Content-Script-Type" content="text/javascript" />
            <meta name="description" content="This is the HEAD's description meta tag." />
            <link media="all" rel="stylesheet" href="/scripts/ext-2.0/resources/css/ext-all.css" type="text/css" />
            <form action="ext-ext.bug.html" method="post">
                    <input type="text" size="50" id="description" name="description" value="This is the FORM's description input field." />
                    <button type="button" id="go" name="go" value="True">Go!</button>
            <script type="text/javascript" src="/scripts/ext-2.0/adapter/ext/ext-base.js"></script>
            <script type="text/javascript" src="/scripts/ext-2.0/ext-all.js"></script>
            <script type="text/javascript">
                Ext.onReady(function () {
                    Ext.get('go').on('click', function () {
                        var el = Ext.get('description');
                        var domEl = el.dom;
                        if (domEl.tagName === 'INPUT') {
                        } else if (domEl.tagName === 'META') {
    Last edited by noelito; 14 Apr 2008 at 10:16 AM. Reason: typo

  2. #2
    Sencha User jack.slocum's Avatar
    Join Date
    Mar 2007
    New York, NY
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    This isn't a bug in Ext - it's a bug in IE.

    IMO, there is no reason every call to getDom() or get() should be slowed (could have terrible performance effect) to workaround an IE bug when there is a much better workaround available - if you need to use get(), getDom or document.getElementById then use a unique (to names too) ID.
    Jack Slocum
    Sencha Co-Founder, Ext JS Founder
    Original author of Ext JS 1, 2 & 3.
    Twitter: @jackslocum

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