JavaScript: Guides and Practical Know-how | mironsoft Blog
JavaScript
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May 7, 2026
Functional tests check whether code runs, not whether it looks right. Visual regression testing closes exactly that gap: screenshots of components and pages are compared against a maintained baseline, so unintended CSS changes, broken layouts and rendering bugs surface before they ever go live.
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May 7, 2026
Destructuring looks simple at first glance, but beyond const { a, b } = obj there are patterns that surprise even experienced developers. This article covers nested defaults, computed property keys, rest combined with renaming, and the classic pitfall between undefined and null.
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May 6, 2026
The Reporting API gives browsers a standardized way to automatically report problems like CSP violations, deprecated API usage, or even tab crashes to a central endpoint. Unlike classic error tracking, this happens largely without additional JavaScript and captures cases custom code would never see.
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May 4, 2026
Unused code surprisingly often still ends up in the production bundle, because CommonJS imports, barrel files, or a wrongly set sideEffects flag prevent the bundler from removing it. This article shows mechanically how tree shaking works, which patterns block it, and how bundle analyzer tools make the root causes visible with concrete kilobyte numbers.
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May 4, 2026
Structured clone copies data by default on every postMessage call, which costs noticeable time with large binary data. Transferable objects solve this through an ownership change instead of a copy. This article covers the postMessage transfer list, the newer ArrayBuffer.prototype.transfer(), and common pitfalls with detached buffers.
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May 1, 2026
A Stimulus controller only shows its real strength once lifecycle callbacks, targets, values and outlets are used deliberately, instead of hunting down every DOM element with querySelector, and these exact building blocks turn scattered jQuery fragments into maintainable, testable frontend pieces in Symfony projects.
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Apr 30, 2026
A live search over thousands of entries must react to every keystroke without slowing down the page. With x-model.debounce, an efficient filter function and match highlighting, Alpine.js delivers a fast, reactive search that stays smooth even on very large lists.
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Apr 28, 2026
VueUse bundles more than two hundred ready made composables for storage, sensors, timers and browser APIs. Using this library deliberately instead of ad hoc not only saves time otherwise spent writing your own utility functions, it also reduces bugs around edge cases such as SSR, cleanup and reactivity that hand rolled composables easily miss.
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Apr 27, 2026
Ionic Vue provides a component library that behaves like a native Cupertino app on iOS and like a native Material app on Android, without maintaining two separate UI layers. Navigation stacks, gestures, and theming are already built in and can be used directly inside Vue 3 components.
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Apr 24, 2026
Tailwind CSS utility classes are ignored by most email clients because external stylesheets never arrive in the inbox. A build pipeline that compiles Tailwind and automatically writes the generated rules as inline styles into every HTML element solves this without extra manual work.