WindowEventHandlers.onunload - Web APIs
the onunload property of the windoweventhandlers mixin is the eventhandler for processing unload events.
... note: browsers equipped with pop-up blockers will ignore all window.open() method calls in onunload event handler functions.
...}); window.onunload = function(event) { ...
...And 2 more matches

onunload - Archive of obsolete content
« xul reference home onunload type: script code closing the window calls this event handler on the prefwindow element.

onunload - XUL
« xul reference home onunload type: script code specifies a set of scripts to execute when the browser window is closed by the user.

Listening for Load and Unload - Archive of obsolete content
if your add-on exports a function called onunload(), then that function will be called when the add-on is unloaded, and it will be passed a string describing the reason it was unloaded.
... you don't have to use exports.main() or exports.onunload().
... options.loadreason options.loadreason is one of the following strings describing the reason your add-on was loaded: install enable startup upgrade downgrade exports.onunload() if your add-on exports a function called onunload(), that function will be called when the add-on is unloaded.
...And 2 more matches

Creating Event Targets - Archive of obsolete content
afolder, aindex) { console.log("added ", bookmarkservice.getbookmarkuri(aitemid).spec); }, onitemvisited: function(aitemid, avisitid, time) { console.log("visited ", bookmarkservice.getbookmarkuri(aitemid).spec); }, queryinterface: xpcomutils.generateqi([ci.nsinavbookmarkobserver]) }; exports.main = function() { bookmarkservice.addobserver(bookmarkobserver, false); }; exports.onunload = function() { bookmarkservice.removeobserver(bookmarkobserver); } try running this add-on, adding and visiting bookmarks, and observing the output in the console.
...for example, we can adapt "index.js" as follows: var bookmarks = require("./bookmarks"); function logadded(uri) { console.log("added: " + uri); } function logvisited(uri) { console.log("visited: " + uri); } exports.main = function() { bookmarks.on("added", logadded); bookmarks.on("visited", logvisited); }; exports.onunload = function() { bookmarks.removelistener("added", logadded); bookmarks.removelistener("visited", logvisited); } classes as event targets sometimes we want to emit events at the level of individual objects, rather than at the level of the module.
... and removelistener() functions that it has inherited: var bookmarks = require("./bookmarks"); var bookmarkmanager = bookmarks.bookmarkmanager({}); function logadded(uri) { console.log("added: " + uri); } function logvisited(uri) { console.log("visited: " + uri); } exports.main = function() { bookmarkmanager.on("added", logadded); bookmarkmanager.on("visited", logvisited); }; exports.onunload = function() { bookmarkmanager.removelistener("added", logadded); bookmarkmanager.removelistener("visited", logvisited); } implementing "onevent" options finally, most event targets accept options of the form "onevent", where "event" is the capitalized form of the event type.
...for example, given the implementation of bookmarkmanager above, your "index.js" could be rewritten like this: var bookmarks = require("./bookmarks"); function logadded(uri) { console.log("added: " + uri); } function logvisited(uri) { console.log("visited: " + uri); } var bookmarkmanager = bookmarks.bookmarkmanager({ onadded: logadded, onvisited: logvisited }); exports.onunload = function() { bookmarkmanager.removelistener("added", logadded); bookmarkmanager.removelistener("visited", logvisited); } ...

prefwindow - Archive of obsolete content
attributes buttonalign, buttondir, buttonorient, buttonpack, buttons, defaultbutton, lastselected, onbeforeaccept, ondialogaccept, ondialogcancel, ondialogdisclosure, ondialoghelp, onload, onunload, title, type properties buttons, currentpane, defaultbutton, lastselected, preferencepanes, type methods acceptdialog, addpane, canceldialog, centerwindowonscreen, getbutton, opensubdialog, openwindow, showpane examples <?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/" type="text/css"?> <prefwindow xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul...
...to do this, you can set the prefwindow's onunload attribute to a function that will be run when the prefwindow is closed.
... <prefwindow xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" id="my-config-dialog" title="my application: configuration" onunload="onunload(event.target)"> </prefwindow> function onunload(prefwindow) { // do actions there like saving values, password setting (that is not handled as a preference), etc.

HTMLBodyElement - Web APIs
windoweventhandlers.onunload is an eventhandler representing the code to be called when the unload event is raised.
... living standard technically, the event-related properties onafterprint, onbeforeprint, onbeforeunload, onblur, onerror, onfocus, onhashchange, onlanguagechange, onload, onmessage, onoffline, ononline, onpopstate, onresize, onstorage, and onunload, have been moved to windoweventhandlers.
... the following properties have been added: onafterprint, onbeforeprint, onbeforeunload, onblur, onerror, onfocus, onhashchange, onload, onmessage, onoffline, ononline, onpopstate, onresize, onstorage, and onunload.

Window - Web APIs
windoweventhandlers.onpagehide called when the user navigates away from the page, before the onunload event.
... windoweventhandlers.onunload called when the user navigates away from the page.
... also available via the onunload property.

/loader - Archive of obsolete content
getservice(ci.nsiobserverservice); let observer = { observe: function onunload(subject, topic, reason) { // if this module is unloaded then `subject.wrappedjsobject` will be // `unloadsubject`.

Bookmarks - Archive of obsolete content
itemmoved: function(aitemid, aoldparent, aoldindex, anewparent, anewindex) {}, queryinterface: xpcomutils.generateqi([components.interfaces.nsinavbookmarkobserver]) }; // an extension var myextension = { // this function is called when my add-on is loaded onload: function() { bmsvc.addobserver(myext_bookmarklistener, false); }, // this function is called when my add-on is unloaded onunload: function() { bmsvc.removeobserver(myext_bookmarklistener); }, dosomething: function() { alert("did something."); } }; see also nsinavbookmarksservice nsinavbookmarkobserver places using xpcom without chrome - bookmark observer ...

Adding Events and Commands - Archive of obsolete content
window.addeventlistener( "load", function() { xulschoolchrome.browseroverlay.init(); }, false); you can do something similar with the onunload event, to do any cleanup you may need.

Index - Archive of obsolete content
987 onunload xul attributes, xul reference no summary!

JavaScript crypto - Archive of obsolete content
ardevents = true; document.addeventlistener("smartcard-insert", onsmartcardchange, false); document.addeventlistener("smartcard-remove", onsmartcardchange, false); } function deregister() { document.removeeventlistener("smartcard-insert", onsmartcardchange, false); document.removeeventlistener("smartcard-remove", onsmartcardchange, false); } document.body.onload = register; document.body.onunload = deregister; </script> with the above example, your web site will automatically reload anytime a smartcard is inserted or removed.

jspage - Archive of obsolete content
new window(window);var document=new native({name:"document",legacy:(browser.engine.trident)?null:window.document,initialize:function(a){$uid(a);a.head=a.getelementsbytagname("head")[0]; a.html=a.getelementsbytagname("html")[0];if(browser.engine.trident&&browser.engine.version<=4){$try(function(){a.execcommand("backgroundimagecache",false,true); });}if(browser.engine.trident){a.window.attachevent("onunload",function(){a.window.detachevent("onunload",arguments.callee);a.head=a.html=a.window=null; });}return $extend(a,document.prototype);},afterimplement:function(b,a){document[b]=document.prototype[b]=a;}});document.prototype={$family:{name:"document"}}; new document(document);array.implement({every:function(c,d){for(var b=0,a=this.length;b<a;b++){if(!c.call(d,this[b],b,this)){return false;}}return t...

statusBar - Archive of obsolete content
onready (event) occurs when the item was loaded onunload (event) triggers when the item was removed.