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    <p>You need to modify the DOM rapresenting your menupopup. For example:</p> <pre><code>&lt;menulist&gt; &lt;menupopup id="myMenuPopup"&gt; &lt;menuitem id="firstItem" label="Mozilla" value="http://mozilla.org"/&gt; &lt;menuitem id="secondItem" label="Slashdot" value="http://slashdot.org"/&gt; &lt;menuitem id="thirdItem" label="Sourceforge" value="http://sf.net"/&gt; &lt;/menupopup&gt; &lt;/menulist&gt; </code></pre> <p>Now if you want to add another item:</p> <pre><code>var myMenuPopup = document.getElementById("myMenuPopup"); var newItem = document.createElement("menuitem"); newItem.setAttribute("id", "anotherItem"); myMenuPopup.appendChild(newItem); </code></pre> <p>If you want to remove an item:</p> <pre><code>var itemToRemove = myMenuPopup.getElementById("anotherItem"); myMenuPopup.appendChild(itemToRemove); </code></pre> <p>Here you can find much more:</p> <p><a href="https://developer.mozilla.org/en/Dynamically_modifying_XUL-based_user_interface" rel="nofollow noreferrer">https://developer.mozilla.org/en/Dynamically_modifying_XUL-based_user_interface</a></p> <p><strong>Edit:</strong></p> <p>I assume thet your function returns an array of names:</p> <pre><code>var nameLists = yourFunction(); for (var i=0; i&lt;nameList.length; i++){ var newItem = document.createElement("menuitem"); newItem.setAttribute("label", nameList[i]); newItem.setAttribute("id", "item" + i); myMenuPopup.appendChild(newItem); } </code></pre> <p>I think is better if you call the function that make items <strong>before</strong> user click on menupopup, not on the event invocation, because if you have many items it may takes a little to construct the items list. </p>
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    1. PODynamically show data in the popup which is determined in onpopupshowing event handler
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    1. PODynamically show data in the popup which is determined in onpopupshowing event handler
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    1. COhey kucebe, thanks for the help. it works now. so far so good. Now I need to have the click functionality too on these newly added menuitems. putting the atttribute and forming the function is easy. I can have a function to be run when they are clicked. But i need to pass namelist[i] to the function and it will act according to the namelist parameter.If i do: newItem.setAttribute("oncommand" , finalclick(namelist[m])); it runs the function everytime the popup opens runs the function without even clicking on it
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    2. COon the other hand if i do newItem.setAttribute("oncommand" , "finalclick(namelist[m])"); it doesnot open even on clicking giving error : namelist is not defined.
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    3. COI think would be better if you make your event listener like this: newItem.oncommand = function(){ finalclick(namelist[m]); }
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      1. USManuel Bitto
 

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