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The IndexedDB 2.0 standard is now fully supported in Chrome, and features new schema management, bulk action methods, and more standardized handling of failures. Progressive Web Apps become more immersive with display: fullscreen. allow-top-navigation-by-user-activation gives sandboxed iframes new powers And there's plenty more! Want the full list of changes? Check out the Chromium source reposito
State. One of the most complicated concepts in React.js nomenclature. While some of us already got rid of it in our projects (Redux anyone?) by externalizing state, it is still widely used feature of React.js. While convenient, it can cause some issues. Robert Pankowecki, one of Rails meets React.js authors had the problem with validations when he started his journey with React. The story went lik
// Style: // transition: opacity 1s // transitionを発火する elem.style.opacity = '0'; getComputedStyle(elem); // 終わったら次の画面をactiveにする elem.addEventListener('transitionend', evt => { if (evt.propertyName === 'opacity') { evt.target.remove(); homeScreen.classList.add('active'); } }); /* * でも… */ button.addEventListener('focus', () => { // もしこれがmustacheのようなテンプレート仕組み… render(); }); transitionendが発火されないケース 要
HR.js Tiny JavaScript plugin for highlighting and replacing text in the DOM No dependencies. ✔ ⬇ Download ✒ Highlight Highlight lorem Lorem ipsum dolor sit amet, consectetur adipisicing elit. Highlight new HR("#highlight_example", { highlight: "lorem" }).hr(); ⟳ Replace and ✒ Highlight Replace elit with boo Lorem ipsum dolor sit elit amet, consectetur adipisicing elit. Replace and Highlight new HR
Technically speaking, mobx-state-tree (also known as MST) is a state container system built on MobX, a functional reactive state library. This may not mean much to you, and that’s okay. I’ll explain it like this: MobX is a state management "engine", and MobX-State-Tree gives it structure and common tools you need for your app. MST is valuable in a large team but also useful in smaller applications
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