window.open() がイベントごとに一度しか呼び出せなくなりました | Firefox サイト互換性情報
Firefox 65 で、複数のポップアップウィンドウが同時に開かれるのを防ぐため、ポップアップブロッカーが改良されました。window.open メソッドの呼び出しはイベントごとに 1 回のみ許容され、もし後続の呼び出しが行われた場合はブラウザーによってブロックされます。より良いユーザー体験のためには、いずれにしても複数ポップアップやタブを開くことは避けるべきでしょう。
Everything is terrible (but more so inside a keypress event handler)
Everything is terrible (but more so inside a keypress event handler) Happy new years. We got really, really close to being able to ship window.event, but had to back that out from shipping to Firefox 65 release in Bug 1520756 (like we had to do in 63). Back in 2014’s classic post “Why FF says that window.event is undefined? (call function with added event listener)*” I mentioned the global event t
Speed Up Scroll Events with Passive Event Listeners | DigitalOcean
While we believe that this content benefits our community, we have not yet thoroughly reviewed it. If you have any suggestions for improvements, please let us know by clicking the “report an issue“ button at the bottom of the tutorial. Okay, let me get this out of the way real quick. I hate websites that attach wheel (or touchstart and touchmove) events to a page. Utterly hate them. The main reaso
Aligned input events | Blog | Chrome for Developers
TL;DR Chrome 60 reduces jank by lowering event frequency, thereby improving the consistency of frame timing. The getCoalescedEvents() method, introduced in Chrome 58 provides the same wealth of event information you've had all along. Providing a smooth user experience is important for the web. The time between receiving an input event and when the visuals actually update is important and generally
Event Bubbling in JavaScript? Event Propagation Explained
What Is Event Bubbling in JavaScript? Event Propagation ExplainedVanilla JavaScript Event bubbling is a term you might have come across on your JavaScript travels. It relates to the order in which event handlers are called when one element is nested inside a second element, and both elements have registered a listener for the same event (a click, for example). But event bubbling is only one piece
GitHub - pinnacle/react-event: Declarative way to handle events outside / inside of React Component.
Introduction | EventStoreDB Documentation
TIP The new generation of EventStoreDB starts from version 20.6. Learn more about the latest version here. Welcome to the EventStoreDB 5.0 documentation. EventStoreDB is a database designed for Event Sourcingopen in new window. This documentation introduces key concepts of EventStoreDB and explains its installation, configuration and operational concerns. EventStoreDB is available as both a Open-S
Tackling Complexity in CQRS
The CQRS pattern can do wonders: it can maximize scalability, performance, security, and even “beat” the CAP theorem. Nonetheless, CQRS has acquired a controversial name because of the complexity it introduces. For instance, in his article on CQRS, Martin Fowler argues that the pattern should be applied sparingly and even cautiously: “… for most systems CQRS adds risky complexity” “… you should be
Event: defaultPrevented property - Web APIs | MDN
Document Object ModelEventConstructorEvent()Instance propertiesbubblescancelablecancelBubble Deprecated composedcurrentTargetdefaultPrevented eventPhaseexplicitOriginalTarget Non-standard isTrustedoriginalTarget Non-standard returnValue Deprecated srcElement Deprecated targettimeStamptypeInstance methodscomposedPath()initEvent() Deprecated preventDefault()stopImmediatePropagation()stopPropagation(
Making touch scrolling fast by default | Blog | Chrome for Developers
We know that scrolling responsiveness is critical to the user's engagement with a website on mobile, yet touch event listeners often cause serious scrolling performance problems. Chrome has been addressing this by allowing touch event listeners to be passive (passing the {passive: true} option to addEventListener()) and shipping the pointer events API. These are great features to drive new content
DOM Standard
Participate: GitHub whatwg/dom (new issue, open issues) Chat on Matrix Commits: GitHub whatwg/dom/commits Snapshot as of this commit @thedomstandard Tests: web-platform-tests dom/ (ongoing work) Translations (non-normative): 日本語 Abstract DOM defines a platform-neutral model for events, aborting activities, and node trees. 1. Infrastructure This specification depends on the Infra Standard. [INFRA]
JavaScriptでTouchEvents(Level-2)を擬似発火する - Qiita
?ってなにこれ。 試してみたら、Firefoxでは使えなかった。ジャンク屋の動作未確認のようなもんだな！ まあ、今回はChromeで試すだけなので問題ない。 TouchEvent Level-2以前の世界 v2以前のタッチの擬似発火は本当につらいものだった。 初期化用のinitTouchEvent関数には15個くらい引数が必要となる。（座標指定も必要な割には無視される。） その引数の順番はブラウザごとに異なるうえに、リファレンスなんて気の利いたものはありゃしないのだ。 本当にあったTouchEventの怖い話 - Qiita 記事ではChromeの仕様をChromiumソースコードから読み取っている。 ソースコードはドキュメント！みんなも困ったらブラウザのソース読もう！ ChromeもMSDNやMDN的なものあったらいいのに！ なお、initTouchEventがあまりにもカオスなので、W
Don't lose user and app state, use Page Visibility - igvita.com
Great applications do not lose user's progress and app state. They automatically save the necessary data without interrupting the user and transparently restore themselves as and when necessary - e.g. after coming back from a background state or an unexpected shutdown. Unfortunately, many web applications get this wrong because they fail to account for the mobile lifecycle: they're listening for t
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Explore DOM Events
Page 1 | PageLifecycle.js Demo
Bernd Rücker: Tackling complex event flows
Proposal: self.queueMicrotask(f) · Issue #512 · whatwg/html
Get Started with Apache Kafka on Heroku | Heroku
GitHub - WICG/EventListenerOptions: An extension to the DOM event pattern to allow authors to disable support for preventDefault
