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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) Happy new years. Wegot 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
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 reason is the horrid resulting performance, especially on mobile. You see, the browser has to wait to redraw the page until the event listener finishes execution, as the event is able to be canceled. If your event runs on every single scroll
TL;DRChrome 60 reduces jank by lowering event frequency, thereby improving the consistency of frame timing. The getCoalescedEvents() method, introduced inChrome 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
Stay Relevant and Grow Your Career inTechPremium ResultsPublish articles on SitePointDaily curated jobsLearning PathsDiscounts to dev toolsStart Free Trial7 Day Free Trial. Cancel Anytime. Key Takeaways Event bubbling inJavaScript refers 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 ev
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 adatabase designed for Event Sourcing. This documentation introduces key concepts of EventStoreDB and explainsits installation, configuration and operational concerns. EventStoreDB is available as both a Open-Source and an Enter
The CQRS pattern can do wonders:it can maximizescalability, performance,security, and even “beat” the CAP theorem. Nonetheless, CQRS has acquired a controversial name because of the complexityit 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
Document Object Model (DOM)EventConstructorEvent()Instance propertiesbubblescancelablecancelBubble Deprecated composedcurrentTargetdefaultPreventedeventPhaseexplicitOriginalTarget Non-standard isTrustedoriginalTarget Non-standard returnValue Deprecated srcElement Deprecated targettimeStamptypeInstance methodscomposedPath()initEvent() Deprecated preventDefault()stopImmediatePropagation()stopPropaga
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 eventsAPI. These are great features to drive new content
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 简体中文 Abstract DOM defines a platform-neutral model for events, aborting activities, and node trees. 1. Infrastructure This specification depends on the Infra Standard. [IN
Great applications do not lose user's progress and app state. They automatically save thenecessary data without interrupting the user and transparently restore themselves as and whennecessary - 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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