HTML5 has a lot of new features. There’s new HTML, CSS and, of course, JavaScript. Officially HTML5 specification and implementation won’t be ready until 2022. Personally I don’t believe in this. Majority of JavaScript features described further are already implemented in modern browsers (e.g. Sarafi, Chrome, Firefox, Opera). Even Internet Explorer gained capability to render canvas and other stuff (supposing we use ExplorerCanvas or Chrome Frame). Take a closer look at what’s going to make your live better and happier :

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Event delegation involves attaching event handler to parent DOM element. Reason is simple: when an event is triggered on an element, the same event is also triggered on all of that element’s ancescors. Event bubbles up from the most nested element (e.g. button) to the root of the DOM (e.g. window); this process is known as event bubbling.

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If your startup is relatively new and doesn’t take much network traffic, there’s probably no reason to be interested in caching. The problem arises when users begin to complain about the time to load several pages. Well, users hate waiting. If you care about their convenience or you are curious about caching this article is especially for you. Read entire post »