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By Ilya Grigorik on May 20, 2014 Synchronous scripts are bad because they force the browser to block DOM construction, fetch the script, and execute it before the browser can continue processing the rest of the page. This, of course, should not be news, and is the reason why we have been evangelizing the use of asynchronous scripts. Here is the canonical example: <!-- BAD: blocking external script
UGURUS offers elite coaching and mentorship for agency owners looking to grow. Start with the free Agency Accelerator today. A reader recently wrote in and (essentially) asked me: Is there any reason to use the async attribute when the script is already at the bottom of the page? I’m not a master at this stuff, but this is how I understand it… What he was talking about was this: <script async src=
こんにちは丸山@h13i32maruです。 ES6のGeneratorを勉強する題材としてasync/awaitを実装してみたので、そのメモです。 Genratorとは ES6のGeneratorとは「任意の時点で処理を中断/再開することができる関数」というもの。一般的にはコルーチン(coroutine)と呼ばれるもので、サブルーチン(通常の関数)を一般化したもの。ES6でGeneratorを理解するには3つのキーワードがある。 Generator Function 処理の中断/再開が行われる特殊な関数 function* generatorFunction(){}のようにfunction*を使って定義する Generator Object 中断された処理を再開したり、値を取得し対するオブジェクト var generatorObject = generatorFunction()のように取
Posted 27 March 2014 - hey at least it's not another progressive enhancement article They're brilliant. They're brilliant and I want laws changed so I can marry them. Update: This feature is now shipping in browsers. I've written a more up-to-date and in-depth guide. Async with promises In the HTML5Rocks article on promises, the final example show how you'd load some JSON data for a story, then us
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