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POChanging input text value with Javascript doesn't change display
 

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  1. POChanging input text value with Javascript doesn't change display
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    <p>I'm trying to change the value of a text <code>input</code> field based on user actions. I'm doing it like this:</p> <pre><code>document.getElementById(textFieldID).value = newValue;</code></pre> <p>It isn't quite working -- the original text in the field remains on the screen, unchanged. However, when I submit the form, it behaves as though the value was indeed changed correctly. (And a debug <code>alert</code> confirms that yup, I'm hitting that bit of the code and passing in the right field ID and text value.) Anybody have any insights? Is there something I need to be doing to redraw the <code>input</code> element? <hr /> <strong>Edit:</strong> Per Jeff B's request, and per the fact that this seems to have everybody stumped, here's some relevant bits of code:</p> <pre><code> &lt;script LANGUAGE="JavaScript" TYPE="text/javascript"> function changeText(changeSelector) { var myindex = document.getElementById(changeSelector+"Recent").selectedIndex; var SelValue = document.getElementById(changeSelector+"Recent").options[myindex].value; document.getElementById(changeSelector).value = SelValue; document.getElementById("historicalText").value = SelValue; document.getElementById("historicalTextSelect").value = changeSelector; } &lt;/script> &lt;input onChange="updateScrollingPreview1217(this); return true;" type="text" id="crawlMsg1217" name="crawlMsg1217" size="60" maxlength="1000" value=""> &lt;select id="crawlMsg1217Recent" name="crawlMsg1217Recent" onchange="javascript:changeText('crawlMsg1217');"> [options go here] &lt;/select> </code></pre> <p>And that "onChange" handler isn't what's gumming up the works; I get the same behavior with or without it. <hr> <strong>Edit 2:</strong> It looks like the problem is being caused by "JSpell", a third-party spelling checker our product uses. (I'm told that clients prefer using it to a spellcheck built into the browser; go figure.) It appears to be slightly misconfigured on my test machine, so I'm going to try straightening that out and praying that it makes the problems go away. If it doesn't ... should be interesting. <hr> <strong>Edit 3:</strong> Yup. Fscking JSpell. Just posted a complete answer for the sake of posterity, will accept it tomorrow when I'm allowed. My thanks to everybody who tried to help; +1's all around, wish I could give more.</p>
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    1. COTried this on more than just one web browser? Could be a web browser bug/misbehavior.
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    2. COThat should work. Side note: `document.getElementById` is for getting elements by their `id` attribute. You seem to be suggesting that you are passing in the `name` attribute of the field. This will only work in IE<8 due to a bug.
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      1. USCrescent Fresh
    3. COManagu: I'm getting the same behavior in IE6, IE7 (well, 8 in compatibility mode), IE8, and FF3. Nice thought, but not my culprit here.
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