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Understanding `Promise.all()`, `Promise.race()`, and `Promise.any()`

JavaScript gives us several ways to coordinate multiple asynchronous operations. Three of the most useful are Promise.all() , Promise.race() , and Promise.any() . They all accep...
Triggering a JavaScript `change` Event When Assigning `input.value`

In the browser, user interaction and JavaScript assignment are not treated the same way. When a user types, pastes, or drops text into an , the browser fires an input event. Whe...
Front-End News: `setHTML()` and `Element.startViewTransition()` Are Now Supported

Two DOM APIs quietly became much more interesting recently: Element.setHTML() and Element.startViewTransition() . The first gives the browser a native way to insert HTML while a...
Use the CSS `revert` Global Keyword to Restore an Element’s `display`

Small CSS details often cause the most confusing UI bugs. Here is a common front-end requirement: show only the first three list items by default, then reveal the remaining item...
Proxy Is for Proxies. What Is `Reflect` For?

JavaScript’s Proxy feels immediately useful: it lets you intercept property reads, writes, function calls, construction, and more. Reflect , at first glance, feels less dramatic...

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