Develop Reference

How to change window icon in electron after browser is open?

I don't know if this is possible, but I figured I'd ask.
After my electron app opens a browser window and is displaying some icon in the taskbar and in its title bar for the window, can I change one or both of those icons while the browser is open? I suspect the answer is a hard no, but I thought it'd be cool if I could make it react in some way.
The search terms I came up with were mostly leading me to answers for how to change the icon before the window is open.

Yes, you can use win.setIcon('/path/to/icon.png'); to change the window icon.
setIcon Docs

Open multiple windows on chrome start

I work in a situation where the computer I use is inconsistent, and I often have never logged onto the computer I'm working on before. As such, I use chrome and launch most of the things I need using the "on startup" option.
My issue is that I have a page that I would like to open in a separate window. I've done some finagling with a javascript bookmarklet that does something similar to what I want, but it isn't perfect.
javascript:window.open("http://google.com","_blank","foobar"); javascript:window.close();
This will open a new window at google.com as expected, however It has a few flaws:
The window is not fullscreen. It will always open at a smaller window size, and is horribly inconsistent on where it will show up.
It isn't a standard window, I can't type in the address bar, add tabs, see my bookmarks bar, or use javascript.
I honestly don't know what the second and third parameters in window.open do, the window will open in a tab instead of a window if I don't have them, but it doesn't care what is there.
I have attempted passing javascript commands through the window.open command, but the window refuses to do any of them.
I understand that this is the type of thing that shouldn't be decided by a webpage, and should be left to a user. But I am the user...

I believe that most of the parameters you mentioned (fullscreen window, window size, other window features) are specified in the third argument of window.open(). For example:
window.open("http://google.com","_blank","fullscreen=yes;menubar=yes;titlebar=yes")
would open http://google.com in a new window (_blank) in fullscreen view (fullscreen=yes;) and render the menubar and titlebar (menubar=yes;titlebar=yes). A list of standard values is provided at w3schools.com and developer.mozilla.org

JavaScript window options

I'm looking to create a "pop-up" window that simply displays text within the window without the browser's signature. When I create a window simply by using the window.open command, the Chrome symbol and address bar is displayed.
Is there a way to get rid of this?
Or is there a smarter way of doing this?
Also, with that being said, I want this window to stay on top of all other windows being displayed. That is, I want it to essentially be running on top of a window even though I may be clicking on a full screen window behind it.

No, this is intentionally made not possible (at least in Chrome) because it could be used to confuse the user to think that a browser window is a window for another program.
Google Chrome window.open height includes URL bar

Moving XUL window

I'm working on an app, which is based on Firefox and what I need to build is an in-app password manager. I'm planning to populate it once and hide it from view outside of the window frame, bringing it in-frame when it is needed. Now, I have read about the rules applied to moveTo, namely
"You can't move a window or tab that wasn’t created by window.open.
You can't move a window or tab when it’s in a window with more than one tab."
I was wondering if there are any exceptions to that rule? I have full access to chrome, so I was wondering if there's some more low-level way to achieve the moveTo form there?
Thanks a lot!

The restrictions of window.moveTo() don't apply to code running with system privileges. I just tried typing top.moveTo(-1000, 0) into the Error Console - it moved the window off-screen, something that unprivileged code isn't allowed to do. Still, opening the window off-screen is not possible as far as I know (you can however move it in a load event handler, when the window is still invisible). Also, the task manager still shows that window - it is possible to Alt-Tab to it, then press Alt-Space and choose "Move" from that system menu (that's on Windows).

window.open() in IE 9

when i try to
window.open()
in IE 9 , it opens it with favorites sidebar (if it was present in parent window) this is behaviour unique to IE , and it breaks dialog windows as I envisioned them. Any hope to fix that?

Since you specified that you're using this for a dialog, I feel I should discourage this. Using window.open() is not ideal for creating dialog boxes.
Some browsers will ignore your 'new window' request, and open it as a new tab. This can be configured by the browser user, so is out of your control.
If the user has toolbars and side panels open, there's a strong likelyhood of them showing up in the new window, which will mangle your layout. Again, you'll need to test this in every browser, and even then you can't be sure without knowing all the config options that might affect it.
Opening a new window does not give you a modal dialog box. You can't prevent the user from clicking back to the parent window and ignoring the dialog box.
Therefore, if you want to make a dialog box, you would be much better off using a javascript library that opens a box inside the current page. It's much more flexible, and gives you much more control over the end result than window.open().
If you're using JQuery, you might want to start by looking here: http://choosedaily.com/1178/15-jquery-popup-modal-dialog-plugins-tutorials/, but there are stacks of others available (it's a very easy thing to write, especially in JQuery, so there's plenty of plugins out there you can try till you find one which is perfect for you)

Try changing it to window.location.href= 'url + target="_blank"'