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PO
 

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    <p>I think I finally figured this out. The problem is that I had the menuitem I was trying to edit was <strong>hardcoded inside a .xul file</strong>. For whatever reason, this made it impossible to change the disabled or hidden attributes.</p> <p>So I removed the menuitem from the .xul file and <strong>dynamically created it in the javascript</strong> instead. Now it works exactly as expected:</p> <pre><code>var menuitem = document.getElementById('mypopupitem').appendChild(document.createElement('menuitem')); menuitem.setAttribute('disabled', 'true'); // Works. menuitem.removeAttribute('disabled'); // Also works. </code></pre> <p>Does anyone know, is this a feature/quirk of XUL, or am I just doing it wrong?</p> <p><strong>UPDATE:</strong> As many comments have pointed out, the above is not correct. You absolutely can change the disabled attribute on an item hard coded in a XUL file.</p> <p>After much more debugging, paring the problem down to its core elements, pulling hair, etc, it turned out to be.... a typo. Grrr.. Sorry.</p> <p>It turns out my document.getElementById('menuitem') was grabbing the XUL element, not the element. The fact that the onclick method seemed to be firing correctly seems to have been thanks to event bubbling (I guess?). I still have no idea why setAttribute('label', 'changed') worked when I tried that, but unfortunately, in the frenzy of debugging, I don't have that version to check again.</p> <p>Anyway, it's working now, without having to dynamically create the menuitem. Thanks for all the help!</p>
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    1. POWhy can't I disable this XUL menuitem?
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    1. POWhy can't I disable this XUL menuitem?
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    1. COthis is stange, it should work even if the menuitem is hardcoded in the xul file
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    2. COI agree. mrdrbob, perhaps you could post the xul that you were working with? Glad to hear this is working for you, but you definitely should *not* have to add it by manipulating the DOM.
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      1. USpc1oad1etter
    3. COIs the menuitem in a menu, a menupopup, or a menubutton? Do you have it inside a menupopup object inside whatever parent you're using?
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      1. USJoel Anair
 

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