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Is it possible to find foreign instances of certain website? Ofc theese are independently opened tabs (not by window.open). I need to prevent user from opening 2 tabs, and send message to previously opened tab to inform that it's impossible to op...

Good day to all.  I need to do this:  When user X press a button user Y sees a photo. Before that user Y sees nothing.   I did this like this: I created a database on a mysql server and created a table with photos and flags. When user X presses the b...

I'm trying to build an Extension which sends data from the popup.html to the tab dome, but I can't get the sendMessage to work and I don't understand why. I'm following this guidline: https://developer.chrome.com/extensions/messaging....

I'm using Angular 1.5.9.   Right now I have two components which need to communicate. If I change something in the first one (for example choose item in the list) => second one needs to be changed (item that was chosen needs to be displayed) a...

Is there a way for the parent to pass-in a reference of an object declared in a function in the parent window to be accessible to a child iFrame?  Using postMessage doesn't do the trick, especially as IE9 doesn't support objects and data need...

I'm trying to implement a mechanism to send textual data (JSON for instance) in from page to page, using javascript at the same machine.  I found some code and wrapped it but it only works at the same page.  At the moment I don't want to use...

I'm developing a WPF application with only a WebBrowser that launch a HTML page with JavasCript. I also have some C# methods.  I'm looking for a good way to launch my C# methods in JavaScript, with parameters and if possible callbacks.  For n...

I have a script that displays a list of song names and when the user clicks a 'listen' button the filename is passed to a Flash player which loads and plays the mp3. This works fine for Safari and IE but not in Mozilla. Does anyone know of an...

One of my assignments for my Web Design class is to create a page in which two frames communicate using JavaScript. There are four links on the lower frame (lower2.html) and when clicked, they're supposed to change the image in the upper frame (u...