[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"verticals":3,"tag-webdev-2":32,"tags-dev":280},[4,20],{"id":5,"slug":6,"name":7,"tagline":8,"description":9,"accentFrom":10,"accentTo":11,"icon":12,"defaultLocale":13,"locales":14,"features":16,"position":19},"019fe637-3d33-714b-b57f-23e163ffca0c","dev","Web Development","Build. Learn. Ship.","Practical courses, engineering-grade articles and open-source tools for people who ship.","violet-500","cyan-400","◇","en",[13,15],"fa",{"courses":17,"paths":17,"articles":17,"exams":18,"flashcards":18,"packages":17,"community":17,"certificates":17,"teams":17,"commerce":17},true,false,0,{"id":21,"slug":22,"name":23,"tagline":24,"description":25,"accentFrom":26,"accentTo":10,"icon":27,"defaultLocale":13,"locales":28,"features":30,"position":31},"019fe637-3dc2-754c-8657-0f175bfee7c6","lang","Languages","Learn a language the way you learn a codebase.","Structured paths, listening drills and spaced repetition that actually sticks.","amber-400","⌘",[13,15,29],"es",{"courses":18,"paths":18,"articles":17,"exams":18,"flashcards":17,"packages":18,"community":17,"certificates":17,"teams":18,"commerce":18},2,{"items":33,"meta":277},[34,68,89,107,127,146,164,182,200,219,237,257],{"id":35,"slug":36,"title":37,"subtitle":38,"excerpt":39,"coverUrl":40,"locale":13,"readingMinutes":41,"publishedAt":42,"viewCount":43,"likeCount":19,"commentCount":19,"author":44,"vertical":49,"topic":50,"tags":53,"_count":65,"playground":67,"hasQuiz":17,"hasPlayground":17},"019fe660-c020-760c-b4c7-46c1465e25bd","css-light-dark-function","You're writing dark-mode colors twice. `light-dark()` fixes that.",null,"Every `@media (prefers-color-scheme: dark)` block duplicates your color definitions. `light-dark()` lets you write both values on the same line, in the same rule, with no separate block and no build step. Baseline 2024.","\u002Fmedia\u002Fcovers\u002Fcss-light-dark-function.png",5,"2026-08-02T08:29:56.698Z",210,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},"019fe637-3c25-7088-9034-39c9f15dc3c8","Parsa Jiravand","parsa","Frontend engineer · building bestpractic",{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":51,"name":52},"css","CSS",[54,56,59,62],{"slug":51,"name":55,"color":38},"Css",{"slug":57,"name":58,"color":38},"webdev","Webdev",{"slug":60,"name":61,"color":38},"frontend","Frontend",{"slug":63,"name":64,"color":38},"javascript","Javascript",{"assessments":66},1,{"slug":36},{"id":69,"slug":70,"title":71,"subtitle":38,"excerpt":72,"coverUrl":73,"locale":13,"readingMinutes":41,"publishedAt":74,"viewCount":75,"likeCount":19,"commentCount":19,"author":76,"vertical":77,"topic":78,"tags":80,"_count":87,"playground":88,"hasQuiz":17,"hasPlayground":17},"019fe660-b8d7-7515-892c-bd576110158c","url-parse-safe-parsing","You've been wrapping `new URL()` in try\u002Fcatch. `URL.parse()` does it natively.","Validating an untrusted URL before parsing it used to mean a try\u002Fcatch wrapper or a regex. `URL.canParse()` checks validity without constructing. `URL.parse()` parses and returns null on failure. Both are Baseline 2024 — no wrapper needed.","\u002Fmedia\u002Fcovers\u002Furl-parse-safe-parsing.png","2026-08-01T08:27:13.710Z",124,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},"JavaScript",[81,82,83,84],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":85,"name":86,"color":38},"typescript","Typescript",{"assessments":66},{"slug":70},{"id":90,"slug":91,"title":92,"subtitle":38,"excerpt":93,"coverUrl":94,"locale":13,"readingMinutes":41,"publishedAt":95,"viewCount":96,"likeCount":19,"commentCount":19,"author":97,"vertical":98,"topic":99,"tags":100,"_count":105,"playground":106,"hasQuiz":17,"hasPlayground":17},"019fe660-b09d-731e-b160-9e45270a5652","css-scope-native-style-scoping","CSS has no native scoping. `@scope` changes that.","BEM, CSS Modules, and scoped component styles all exist because CSS leaks — a rule written for one component can silently affect another. `@scope` gives the cascade a lower boundary so styles stay where you put them, natively, with no build step.","\u002Fmedia\u002Fcovers\u002Fcss-scope-native-style-scoping.png","2026-07-31T08:56:20.507Z",137,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":51,"name":52},[101,102,103,104],{"slug":51,"name":55,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":63,"name":64,"color":38},{"assessments":66},{"slug":91},{"id":108,"slug":109,"title":110,"subtitle":38,"excerpt":111,"coverUrl":112,"locale":13,"readingMinutes":41,"publishedAt":113,"viewCount":114,"likeCount":19,"commentCount":19,"author":115,"vertical":116,"topic":117,"tags":118,"_count":125,"playground":126,"hasQuiz":17,"hasPlayground":17},"019fe660-a973-77a9-9820-826bf25fd884","iterator-helpers-lazy-filter-map","Array methods are eager. Iterator helpers are lazy. Here's why that matters.","Every `.map()` and `.filter()` on an array creates a new intermediate array. Iterator helpers — built into JavaScript since 2024 — give you the same pipeline but evaluate one element at a time, with no wasted allocations.","\u002Fmedia\u002Fcovers\u002Fiterator-helpers-lazy-filter-map.png","2026-07-30T08:34:21.684Z",116,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},[119,120,121,122],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":123,"name":124,"color":38},"performance","Performance",{"assessments":66},{"slug":109},{"id":128,"slug":129,"title":130,"subtitle":38,"excerpt":131,"coverUrl":132,"locale":13,"readingMinutes":133,"publishedAt":134,"viewCount":135,"likeCount":19,"commentCount":19,"author":136,"vertical":137,"topic":138,"tags":139,"_count":144,"playground":145,"hasQuiz":17,"hasPlayground":17},"019fe660-a1fc-740c-9df4-b60a02de8afa","css-color-mix-native-color-mixing","You reach for Sass to mix colors. `color-mix()` does it natively.","Sass's `darken()`, `lighten()`, and `mix()` functions solved real problems CSS couldn't handle for decades. `color-mix()` is the native answer, and it ships in every modern browser with no build step required.","\u002Fmedia\u002Fcovers\u002Fcss-color-mix-native-color-mixing.png",4,"2026-07-29T08:47:34.803Z",100,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":51,"name":52},[140,141,142,143],{"slug":51,"name":55,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":63,"name":64,"color":38},{"assessments":66},{"slug":129},{"id":147,"slug":148,"title":149,"subtitle":38,"excerpt":150,"coverUrl":151,"locale":13,"readingMinutes":133,"publishedAt":152,"viewCount":153,"likeCount":19,"commentCount":19,"author":154,"vertical":155,"topic":156,"tags":157,"_count":162,"playground":163,"hasQuiz":17,"hasPlayground":17},"019fe660-9a9b-73dc-87cd-48744e21e671","text-wrap-balance-headline-orphans","You hand-edit headlines to avoid orphaned words. `text-wrap: balance` does it natively.","The classic fix for a headline that breaks awkwardly — a manual `\u003Cbr>`, a `­`, or a max-width tweak — exists because CSS had no way to distribute line breaks evenly. `text-wrap: balance` and `text-wrap: pretty` are the native answers.","\u002Fmedia\u002Fcovers\u002Ftext-wrap-balance-headline-orphans.png","2026-07-28T08:41:41.989Z",96,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":51,"name":52},[158,159,160,161],{"slug":51,"name":55,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":63,"name":64,"color":38},{"assessments":66},{"slug":148},{"id":165,"slug":166,"title":167,"subtitle":38,"excerpt":168,"coverUrl":169,"locale":13,"readingMinutes":133,"publishedAt":170,"viewCount":171,"likeCount":19,"commentCount":19,"author":172,"vertical":173,"topic":174,"tags":175,"_count":180,"playground":181,"hasQuiz":17,"hasPlayground":17},"019fe660-8482-75bc-ab16-8e86f92efc09","resize-observer-element-size","You're watching `window` to detect element size changes. `ResizeObserver` watches the element itself.","A `window` resize listener only fires when the viewport changes. ResizeObserver fires whenever the element's own box changes — from content loading, parent reflow, container queries, or anything else.","\u002Fmedia\u002Fcovers\u002Fresize-observer-element-size.png","2026-07-26T08:32:44.347Z",89,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},[176,177,178,179],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":123,"name":124,"color":38},{"assessments":66},{"slug":166},{"id":183,"slug":184,"title":185,"subtitle":38,"excerpt":186,"coverUrl":187,"locale":13,"readingMinutes":133,"publishedAt":188,"viewCount":189,"likeCount":19,"commentCount":19,"author":190,"vertical":191,"topic":192,"tags":193,"_count":198,"playground":199,"hasQuiz":17,"hasPlayground":17},"019fe660-7d17-745b-812d-b1e81a1b2b85","css-starting-style-entry-animations","You use a setTimeout to trigger CSS entry animations. `@starting-style` makes it unnecessary.","Before `@starting-style`, the moment an element entered the DOM was invisible to CSS — transitions had no 'before' state to interpolate from. The at-rule gives you one, natively, with no JavaScript required.","\u002Fmedia\u002Fcovers\u002Fcss-starting-style-entry-animations.png","2026-07-25T08:13:02.298Z",91,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":51,"name":52},[194,195,196,197],{"slug":51,"name":55,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":63,"name":64,"color":38},{"assessments":66},{"slug":184},{"id":201,"slug":202,"title":203,"subtitle":38,"excerpt":204,"coverUrl":205,"locale":13,"readingMinutes":133,"publishedAt":206,"viewCount":207,"likeCount":19,"commentCount":19,"author":208,"vertical":209,"topic":210,"tags":212,"_count":217,"playground":218,"hasQuiz":17,"hasPlayground":17},"019fe660-75da-727d-a751-32f8723b0b38","using-explicit-resource-management","You still write `finally { resource.close() }`. The `using` keyword does it automatically.","The Explicit Resource Management proposal adds a `using` declaration that calls cleanup the moment a scope exits — normal return, early return, or throw. No more try\u002Ffinally boilerplate for timers, event listeners, connections, or any other resource you need to release.","\u002Fmedia\u002Fcovers\u002Fusing-explicit-resource-management.png","2026-07-24T08:33:28.459Z",66,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":85,"name":211},"TypeScript",[213,214,215,216],{"slug":85,"name":86,"color":38},{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"assessments":66},{"slug":202},{"id":220,"slug":221,"title":222,"subtitle":38,"excerpt":223,"coverUrl":224,"locale":13,"readingMinutes":133,"publishedAt":225,"viewCount":226,"likeCount":19,"commentCount":19,"author":227,"vertical":228,"topic":229,"tags":230,"_count":235,"playground":236,"hasQuiz":17,"hasPlayground":17},"019fe660-6e7e-72cb-bd34-bc123056cfeb","set-methods-union-intersection","You've been doing Set math by hand. JavaScript finally shipped `.union()`, `.intersection()`, and friends.","Set has always been missing its obvious operations. ES2025 adds `.union()`, `.intersection()`, `.difference()`, `.symmetricDifference()`, and three boolean predicates — native methods that used to require four lines of spread syntax each.","\u002Fmedia\u002Fcovers\u002Fset-methods-union-intersection.png","2026-07-23T08:37:02.144Z",52,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},[231,232,233,234],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":60,"name":61,"color":38},{"slug":85,"name":86,"color":38},{"assessments":66},{"slug":221},{"id":238,"slug":239,"title":240,"subtitle":38,"excerpt":241,"coverUrl":242,"locale":13,"readingMinutes":133,"publishedAt":243,"viewCount":244,"likeCount":19,"commentCount":19,"author":245,"vertical":246,"topic":247,"tags":248,"_count":255,"playground":256,"hasQuiz":17,"hasPlayground":17},"019fe660-66d6-71c3-b71a-ed9102b874c8","promise-with-resolvers","You keep escaping the Promise constructor. `Promise.withResolvers` does it right.","The 'deferred promise' pattern — storing resolve and reject outside the constructor so you can call them later — is a daily JavaScript idiom that's always felt awkward. ES2024 added a one-liner for it.","\u002Fmedia\u002Fcovers\u002Fpromise-with-resolvers.png","2026-07-22T08:35:52.029Z",58,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},[249,250,251,252],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":85,"name":86,"color":38},{"slug":253,"name":254,"color":38},"asyncjs","Asyncjs",{"assessments":66},{"slug":239},{"id":258,"slug":259,"title":260,"subtitle":38,"excerpt":261,"coverUrl":262,"locale":13,"readingMinutes":133,"publishedAt":263,"viewCount":264,"likeCount":19,"commentCount":19,"author":265,"vertical":266,"topic":267,"tags":268,"_count":275,"playground":276,"hasQuiz":17,"hasPlayground":17},"019fe660-5f55-701e-9cf4-dc0c9f0517b9","error-cause-rethrow-context","You're rethrowing errors and losing context. `Error.cause` fixes that.","Every time you catch an error and rethrow a new one without forwarding the original, you lose the stack trace, the error type, and everything useful about what actually went wrong. ES2022 added `Error.cause` to fix exactly this.","\u002Fmedia\u002Fcovers\u002Ferror-cause-rethrow-context.png","2026-07-21T08:36:02.331Z",62,{"id":45,"name":46,"username":47,"avatarUrl":38,"headline":48},{"slug":6,"name":7,"accentFrom":10,"accentTo":11},{"slug":63,"name":79},[269,270,271,274],{"slug":63,"name":64,"color":38},{"slug":57,"name":58,"color":38},{"slug":272,"name":273,"color":38},"node","Node",{"slug":85,"name":86,"color":38},{"assessments":66},{"slug":259},{"page":31,"perPage":278,"total":279,"totalPages":41},12,50,[281,282,284,286,288,290,292,295,296,300,303],{"slug":57,"name":58,"color":38,"articles":279},{"slug":63,"name":64,"color":38,"articles":283},45,{"slug":60,"name":61,"color":38,"articles":285},44,{"slug":51,"name":55,"color":38,"articles":287},18,{"slug":85,"name":86,"color":38,"articles":289},9,{"slug":123,"name":124,"color":38,"articles":291},7,{"slug":293,"name":294,"color":38,"articles":41},"react","React",{"slug":272,"name":273,"color":38,"articles":133},{"slug":297,"name":298,"color":38,"articles":299},"ai","Ai",3,{"slug":301,"name":302,"color":38,"articles":299},"tutorial","Tutorial",{"slug":304,"name":305,"color":38,"articles":299},"html","Html"]