HTML5 Page Visibility API | Envato Tuts+In earlier days, we had browsers that did not feature tabbed browsing, but today when you look at all browsers available, we can see that all browsers offer that. Being a programmer, I normally have 10-15 tabs open at a time, sometime this numbers goes above 25-30. Why This API? Earlier, it was not possible to determine which tab is active and which was not, but with the help of the HTML5 Visibili
