javascript - Checkbox in firefox extension -

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i want place menu item extension has check.

<menupopup id="menu_toolspopup">     <menuitem type="checkbox" label="convert" id="menu_toolspopupitem"/>     </menupopup>

overlay.js

window.addeventlistener("load", function() {myextension.init()}, false); init: function() {                 window.addeventlistener("copy", function() {myextension.test()}, false);         },    test: function (win) {         var x= document.getelementbyid("menu_toolspopupitem"); //not null!!! alert(x)=> [object xulelement]     alert(x.checked);//-> undefined }

i don't state of menu item.

and how save selection after restart browser?

looks have access attribute -- there's no convenient property wrapper in case:

[attribute] checked     type: boolean      indicates whether element checked or not.      use hasattribute() determine whether attribute set instead of getattribute().

https://developer.mozilla.org/en/xul/menuitem#a-checked

and how save selection after restart browser?

there quite possibly few different ways. first 1 comes mind store in preference. https://developer.mozilla.org/en/code_snippets/preferences


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