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という文字列から”ABC”という文字列とその位置(index)を取ろうとすると、非常に面倒な書き方をする必要があります。 "ABC ABC".match(/(ABC)/g) では文字列は取れますが、indexを取ることができません。 これをやるにはmatchではなく、gフラグ付き正規表現とexecやreplaceを使ってやる必要があります。 これを直感的に行うString.prototype.matchAllというProposalも存在しています。 String.prototype.matchAll 今回はこのmatchAll的なものと、キャプチャした内容と位置を取得出来るmatchCaptureGroupAllをもったmatch-indexというライブラリを書きました。 azu/match-index: Get index of each capture. const captureGr
Please note that this polyfill is now in maintenance mode, as of Jan, 2023. We are not planning to add more features or enhancements. This is a polyfill for the Proxy object, part of ES6. See the MDN docs or Introducing ES2015 Proxies for more information on Proxy itself. Unlike other polyfills, this does not require Object.observe, which is no longer supported anywhere. ⚠️ Note that Firefox, Chro
クライアントサイドJavaScriptフレームワークの歴史を整理します。 1stリリース順 1stリリース順に並べます。 有史以前 2008年 6月 SproutCore 10月 Cappuccino 第1世代 クライアントサイドJavaScriptに、どうにかして構造を与えようとした世代 2010年 7月 Knockout 10月 Backbone.js 10月 AngularJS 第2世代 フルスタック化を目指した世代 2011年 6月 Ember.js 7月 Agility.js 8月 Derby 9月 Spine 11月 Knockback.js 12月 Meteor 2012年 CanJS 第3世代 virtual DOM や Object.observe() を使った(使おうとした)世代 2013年 1月 Flight (Flight is not under active d
Converting to ASCII art is performed by reading an image (or a video) then processing it by a series of processors and finally rendering the output. In general it has the following form: Reader >> Pre-Filter >> AA >> Post-Filter >> Renderer This means what follows: Reader reads image (static or moving) and converts it to internal representation. (Optional) Pre-Filter (e.g. brightness or contrast)
Finally, an easy way to animate elements and jump around on your page. It has different easing functions (listed below) and tries (by default) to use CSS-Transitions to animate elements. If the browser doesn't support transitions, force.js fallback to native javascript functions. Force.js support even older browser version with no transition support. Go to the force-js page and try it out! To use
Posted by Patrick Steele-Idem on Thursday, Mar 17th, 2016 Marko is one of the fastest, lightest and most powerful HTML templating engines for Node.js and the browser, and we are very pleased to see a healthy and growing community. Marko has been downloaded over 100k times in the first few months of 2016, and the project has a very active Gitter chat room . We are excited to announce some huge impr
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Jest is running thousands of tests at Facebook at all times, either through continuous integration or invoked by engineers manually during development. This worked well for years even as the people working on Jest moved on to other projects within Facebook. As engineers added more and more tests though, we noticed the performance of Jest wasn't going to scale. Additionally, in the last year the Ja
Hierarchical stories: put logs in context (stories), and group them in higher-order stories; they can be a life-saver with concurrent user actions and async events. End-to-end stories: see all client and server tasks triggered by a user action (a click on the Login button, maybe) in a single place. Storyboard DevTools Chrome extension: view client and server logs with a clean and detail-rich inter
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