This API is so Fetching! – Mozilla Hacks - the Web developer blog
For more than a decade the Web has used XMLHttpRequest (XHR) to achieve asynchronous requests in JavaScript. While very useful, XHR is not a very nice API. It suffers from lack of separation of concerns. The input, output and state are all managed by interacting with one object, and state is tracked using events. Also, the event-based model doesn’t play well with JavaScript’s recent focus on Promi
Fetch API in action
A front end web development blogSergey Gospodarets Blog Written on January 19, 2015 In short, Fetch API- it's a new Promise- based standard for doing AJAX requests. Syntax for XHR was provided more then 10 years ago (XMLHttpRequest2 - about 4 years ago). Many things changed, we got HTML5, CSS3, also close to start using EcmaScript 6. From jQuery Deferred, $q and Native JavaScript Promises people
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