mepoltx.blogg.se - Block javascript popups

#BLOCK JAVASCRIPT POPUPS UPDATE#
#BLOCK JAVASCRIPT POPUPS CODE#
#BLOCK JAVASCRIPT POPUPS WINDOWS#

These OS-level functions are hidden from Frontend-developers. JavaScript has no way to minify or maximize a window. Let’s open a window with minimal set of features, just to see which of them browser allows to disable: There is also a number of less supported browser-specific features, which are usually not used.

scrollbars (yes/no) – allows to disable the scrollbars for the new window.

resizable (yes/no) – allows to disable the resize for the new window.

status (yes/no) – shows or hides the status bar.

FF and IE don’t allow to hide it by default.

location (yes/no) – shows or hides the URL field in the new window.

toolbar (yes/no) – shows or hides the browser navigation bar (back, forward, reload etc) on the new window.

menubar (yes/no) – shows or hides the browser menu on the new window.

There is a limit on minimal width/height, so it’s impossible to create an invisible window.

width/height (numeric) – width and height of a new window.

There is a limitation: a new window cannot be positioned offscreen.

left/top (numeric) – coordinates of the window top-left corner on the screen.

There must be no spaces in params, for instance: width=200,height=100. It contains settings, delimited by a comma. params The configuration string for the new window. If there’s already a window with such name – the given URL opens in it, otherwise a new window is opened. Each window has a window.name, and here we can specify which window to use for the popup. The syntax to open a popup is: window.open(url, name, params): url An URL to load into the new window. This way users are somewhat protected from unwanted popups, but the functionality is not disabled totally. Most browsers block popups if they are called outside of user-triggered event handlers like onclick. So now most browsers try to block popups and protect the user.

#BLOCK JAVASCRIPT POPUPS WINDOWS#

A bad page could open tons of popup windows with ads. In the past, evil sites abused popups a lot. A popup can navigate (change URL) and send messages to the opener window.So opening a popup from a third-party, non-trusted site is safe. A popup is a separate window which has its own independent JavaScript environment.for OAuth authorization (login with Google/Facebook/…), because: Still, there are tasks where popups are still used, e.g. So, popups is not something we use everyday.Īlso, popups are tricky on mobile devices, that don’t show multiple windows simultaneously. As of now, there are other ways to do that: we can load content dynamically with fetch and show it in a dynamically generated. The initial idea was to show another content without closing the main window. Most modern browsers are configured to open url in new tabs instead of separate windows.

#BLOCK JAVASCRIPT POPUPS UPDATE#

Update theĭisplayError function to handle the error message as you see fit.…And it will open a new window with given URL.

This solution for popup blocker checking has been tested in FF (v11), So the first one is blocked, and the second one is not. The difference is that Firefox treats a timeout of 2000ms or less are acceptable, but after it – removes the “trust”, assuming that now it’s “outside of the user action”. …And this works in Firefox too: // open after 1 seconds The popup opens in Chrome, but gets blocked in Firefox. But what is the popup opens in setTimeout?

#BLOCK JAVASCRIPT POPUPS CODE#

If the code is directly in an onclick handler, then that’s easy.

If you think about it, that’s a bit tricky. In the past evil sites abused popups a lot. As of now, there are other ways to do that: JavaScript is able to send requests for server, so popups are rarely used.