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Languages & runtimes · #javascript
Charts collapse or overflow in fluid layouts because Chart.js relies on parent dimensions. Learn how maintainAspectRatio: false works, when it breaks, and how to size containers correctly.
JavaScript promises run to completion, but AbortController lets you cancel in-flight fetch requests when a component unmounts, saving bandwidth and preventing stale state updates.
DataTables is client-side by default. For large tables move to serverSide:true with a whitelisted, parameterized endpoint that echoes draw and returns recordsTotal, recordsFiltered and data.
Stop fighting your linter in callback-heavy projects. Learn how to configure ESLint's no-unused-vars rule to ignore API-mandated function parameters while still catching actual variable leaks.
Stop passing props through five layers of components. Learn how to use Svelte's writable and derived stores to manage global state efficiently and prevent memory leaks.
Learn how Jasmine spies isolate external dependencies, verify interactions, and avoid common pitfalls like brittle internal-method spying and state leakage.
CoffeeScript's fat arrow solves JavaScript's this problem in callbacks by binding to the surrounding scope. Here is how it works, when to use it, and what it costs you.
Alpine.js $watch is a side-effect hook, not a general observer. Learn when to use computed getters, how to fix silent array watchers, and what breaks in legacy browsers.
Atom's package system is a direct product of its JavaScript core and Electron shell. Here is how that architecture enables deep customization, where it introduces performance costs, and how to inspect what your packages are actually doing.
chartjs
datatables
eslint
svelte
jasmine
coffeescript
alpinejs
electron