Window.open() - Web APIs
syntax var window = window.open(url, windowname, [windowfeatures]); parameters url a domstring indicating the url of the resource to be loaded.
...when window.open() returns, the window always contains about:blank.
... examples var windowobjectreference; var windowfeatures = "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes"; function openrequestedpopup() { windowobjectreference = window.open("http://www.cnn.com/", "cnn_windowname", windowfeatures); } var windowobjectreference; function openrequestedpopup() { windowobjectreference = window.open( "http://www.domainname.ext/path/imagefile.png", "descriptivewindowname", "resizable,scrollbars,status" ); } if a window with the name already exists, then url is loaded into the existing window.
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Window.openDialog() - Web APIs
window.opendialog() is an extension to window.open().
...see window.open() description for detailed information.
... features see window.open() for details.
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Window.opener - Web APIs
syntax const openerwindow = window.opener value a window referring to the window that opened the current window (using window.open(), or by a link with target attribute set).
... in modern browsers, a rel="noopener noreferrer" attribute on the originating <a> element will prevent the window.opener reference from being set, in which case this property will return null.
... specifications specification status comment html living standardthe definition of 'window.opener' in that specification.

Working with windows in chrome code
opening windows from a <script> in a window or an overlay to open a new window, we usually use a window.open or window.opendialog dom call, like this: var win = window.open("chrome://myextension/content/about.xul", "aboutmyextension", "chrome,centerscreen"); the first parameter to window.open is the uri of the xul file that describes the window and its contents.
... the window.opendialog function works similarly, but lets you specify optional arguments that can be referenced from the javascript code.
...its parameters are similar to window.open; in fact, window.open's implementation calls nsiwindowwatcher's methods.
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Windows - Archive of obsolete content
opening new browser windows to open a new browser window, you can simply use window.open().
... however, window.open() returns a window object for content, not for the browser window itself, so you should get the chrome window first.
... example window.open(); //this open a pop-up window that could be "blocked" client-side //the following code generate an error as describe in the following warning box var wm = components.classes["@mozilla.org/appshell/window-mediator;1"] .getservice(components.interfaces.nsiwindowmediator); var newwindow = wm.getmostrecentwindow("navigator:browser"); var b = newwindow.gbrowser; the code generate a typeerror from firefox console.
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Adding windows and dialogs - Archive of obsolete content
« previousnext » opening windows and dialogs to open a new window, use the javascript window.open function just like with html windows.
... window.open( "chrome://xulschoolhello/content/somewindow.xul", "xulschoolhello-some-window", "chrome,centerscreen"); the first argument is the url to open, the second is an id to identify the window, and the last is an optional comma-separated list of features, which describe the behavior and appearance of the window.
...the window.open page has a detailed description of the features you can use and their values.
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Features of a Window - Archive of obsolete content
if the name doesn't exist, then a new window is opened and the specified resource is loaded into its browsing context.">window.open() function to open the second window.
... for example: var mywin = window.open("chrome://findfile/content/findfile.xul", "findfile", "chrome"); specifying the width and height you should have noticed that whenever elements were added to a window, the window's width expanded to fit the new elements.
... other window features the flags below can be passed as part of the third argument to the window.open function.
...if the name doesn't exist, then a new window is opened and the specified resource is loaded into its browsing context.">window.open() next, we'll look at how to open secondary dialogs.

Address Book examples
new contact dialog window.opendialog("chrome://messenger/content/addressbook/abnewcarddialog.xul", "", "chrome,resizable=no,titlebar,modal,centerscreen", {selectedab:selectedab}); edit contact dialog window.opendialog("chrome://messenger/content/addressbook/abeditcarddialog.xul", "", "chrome,resizable=no,modal,titlebar,centerscreen", ...
... {aburi:aburi, card:card}); new list dialog window.opendialog("chrome://messenger/content/addressbook/abmaillistdialog.xul", "", "chrome,resizable=no,titlebar,modal,centerscreen", {selectedab:selectedab}); edit list dialog window.opendialog("chrome://messenger/content/addressbook/abeditlistdialog.xul", "", "chrome,resizable=no,titlebar,modal,centerscreen", {abcard:abcard, listuri:listuri}); new address book dialog unlike the edit address book dialog, the new address book dialog does not currently have the facility to get the chrome uri based on the address book type.
... for local (mork) address books: window.opendialog( "chrome://messenger/content/addressbook/abaddressbooknamedialog.xul", "", "chrome,modal=yes,resizable=no,centerscreen", null); for ldap address books: window.opendialog("chrome://messenger/content/addressbook/pref-directory-add.xul", "", "chrome,modal=yes,resizable=no,centerscreen", null); note: there is no new address book dialog for the os x address book.
... window.opendialog(addressbook.propertieschromeuri, "editdirectory", "chrome,modal=yes,resizable=no", {selecteddirectory: addressbook}); how do i set up my own address book?

window.postMessage() - Web APIs
broadly, one window may obtain a reference to another (e.g., via targetwindow = window.opener), and then dispatch a messageevent on it with targetwindow.postmessage().
...methods for obtaining such a reference include: window.open (to spawn a new window and then reference it), window.opener (to reference the window that spawned this one), htmliframeelement.contentwindow (to reference an embedded <iframe> from its parent window), window.parent (to reference the parent window from within an embedded <iframe>), or window.frames + an index value (named or numeric).
... example /* * in window a's scripts, with a being on <http://example.com:8080>: */ var popup = window.open(/* popup details */); // when the popup has fully loaded, if not blocked by a popup blocker: // this does nothing, assuming the window hasn't changed its location.
... if (event.origin !== "http://example.com:8080") return; // event.source is window.opener // event.data is "hello there!" // assuming you've verified the origin of the received message (which // you must do in any case), a convenient idiom for replying to a // message is to call postmessage on event.source and provide // event.origin as the targetorigin.

window/utils - Archive of obsolete content
see the window.open features documentation for more details.
...it wraps window.opendialog.
... for the set of features you can set, see the window.opendialog documentation.

Tabbed browser - Archive of obsolete content
.queryinterface(components.interfaces.nsidocshelltreeitem) .roottreeitem .queryinterface(components.interfaces.nsiinterfacerequestor) .getinterface(components.interfaces.nsidomwindow); mainwindow.gbrowser.addtab(...); from a dialog if your code is running in a dialog opened directly by a browser window, you can use: window.opener.gbrowser.addtab(...); if window.opener doesn't work, you can get the most recent browser window using this code: var wm = components.classes["@mozilla.org/appshell/window-mediator;1"] .getservice(components.interfaces.nsiwindowmediator); var mainwindow = wm.getmostrecentwindow("navigator:browser"); mainwindow.gbrowser.addtab(...); opening a url in a new tab // add tab g...
... window.open(url); } } } reusing by other criteria sometimes you want to reuse a previously-opened tab regardless of which url/uri it displays.
... window.opener.content.document from windows or dialogs not opened by the browser window, you can use nsiwindowmediator to get the document displayed in the selected tab of the most recently used browser window.

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
one concrete example is window.open, which opens a new window: <script> function doopenwindow(){ var mywindow = window.open("about:blank"); mywindow.location.href = "http://www.ibm.com"; } </script> the problem with the code is that window.open is asynchronous -- it does not block the javascript execution until the window has finished loading.
... therefore, you may execute the line after the window.open line before the new window has finished.
... you can deal with this by having an onload handler in the new window and then call back into the opener window (using window.opener).

Creating Dialogs - Archive of obsolete content
var somefile=document.getelementbyid('enterfile').value; window.opendialog("chrome://findfile/content/showdetails.xul","showmore", "chrome",somefile); in this example the dialog showdetails.xul is displayed.
...first, you could use the window.opener property which holds the window that opened the dialog.
...this means it will not work on remote sites; for those, use window.open() instead.

Popup Window Controls - Archive of obsolete content
mozilla will attempt to suppress all calls to window.open() which occur in the following circumstances: global script which is executed as the document is loading script executed as part of a onload event handler script executed in settimeout() or setinterval() what popup windows are not suppressed?
... detecting suppressed popups windows if a user has popup controls enabled for your site, any attempt to call window.open in global script, in an onload handler or in settimeout() or setinterval() will return null rather than a reference to the opened window.
... <html> <head> <title>detecting popup controls</title> <script type="text/javascript"> <!-- // attempt to open an unsolicited window var popup = window.open('about:blank', 'popup'); if (!popup) { // the user has suppressed the popup } // --> </script> </head> <body> <!-- your page here --> </body> </html> if your popup window is crucial to the operation of your web site you can notify the user and ask them to add your site to the list of sites which are allowed to use unsolicited popup windows.

Split object
the script in a might have opened tb by calling window.open, which returns a direct reference to tb's window.
...but then the page that called window.open could use a with statement to inject that window into its scope chain, gaining access to that window's privileges.
...the outer window object is the object returned by window.open.