![]() So browsers had to introduce many limitations to forbid the code like that and protect the user from ads and evils pages. The intention is to “lock” the user within the window. When a user attempts to switch out of the window ( window.onblur), it brings the window back into focus. And there are also focus/blur events that allow to catch the moment when the visitor focuses on a window and switches elsewhere.Īlthough, in practice they are severely limited, because in the past evil pages abused them. Theoretically, there are window.focus() and window.blur() methods to focus/unfocus on a window. elem.scrollIntoView(top = true) Scroll the window to make elem show up at the top (the default) or at the bottom for elem.scrollIntoView(false). win.scrollTo(x,y) Scroll the window to the given coordinates (x,y). win.scrollBy(x,y) Scroll the window x pixels right and y down relative the current scroll. We already talked about scrolling a window in the chapter Window sizes and scrolling. Move/resize methods do not work for maximized/minimized 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.
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