If you’ve ever gotten frustrated trying to figure out why your code doesn’t work, or how someone else’s code works, you are not al……

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This short guide is intended to catch you up with the most important reasoning, terms, tools, and approaches to JavaScript testin……

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In the last year I’ve observed two subtle techniques being used by some developers that take a web app from feeling slow and janky……

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For many years, mobile browsers applied a 300-350ms delay between touchend and click while they waited to see if this was going to……

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Passive event listeners Passive event listeners are a new feature in the DOM spec that enable developers to opt-in to better scrol……

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Table of Contents Types References Objects Arrays Destructuring Strings Functions Arrow Functions Classes & Construc……

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We send an email newsletter to over 70,000 front-end web developers each and every week. As such, we thought it would be worthwhil……

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