https://foxipa.com/en/javascript/learn/ A practical JavaScript learning path from language fundamentals upward. Hugo en-US https://foxipa.com/en/javascript/learn/variables/ Sun, 27 Sep 2026 00:15:00 +0000 https://foxipa.com/en/javascript/learn/variables/ Learn how let and const create bindings, how reassignment works, where lexical bindings are scoped, and how values move through runnable JavaScript examples. https://foxipa.com/en/javascript/learn/numbers/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/numbers/ Learn Number, BigInt, arithmetic, floating-point behavior, special values, and how to choose the right numeric model. https://foxipa.com/en/javascript/learn/strings/ Thu, 17 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/strings/ Learn JavaScript text: template literals, indexing and slicing with substring, the methods worth knowing, and the immutability that shapes them all. https://foxipa.com/en/javascript/learn/booleans-and-conditionals/ Thu, 17 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/booleans-and-conditionals/ Learn how JavaScript decides: === versus ==, the short-circuit logic operators, truthiness and its falsy list, and the if and switch statements. https://foxipa.com/en/javascript/learn/functions/ Thu, 17 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/functions/ Learn JavaScript's three function syntaxes, parameters and returns, default and rest parameters, arrow functions, and the scope rules behind them. https://foxipa.com/en/javascript/learn/objects/ Thu, 17 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/objects/ Learn the labeled container: property access and destructuring, methods, spread and shorthand, and the optional chaining that survives missing data. https://foxipa.com/en/javascript/learn/loops/ Thu, 17 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/loops/ Learn repetition in JavaScript: for and while, for...of over values and for...in over keys, break and continue, and when the array methods replace the loop entirely. https://foxipa.com/en/javascript/learn/expressions-and-operators/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/expressions-and-operators/ Learn how JavaScript expressions produce values, how operators combine and transform them, and how precedence and short-circuiting affect evaluation. https://foxipa.com/en/javascript/learn/values-types-coercion-equality/ Sun, 27 Sep 2026 03:22:00 +0000 https://foxipa.com/en/javascript/learn/values-types-coercion-equality/ Build a reliable mental model for JavaScript language types, primitive values, objects, truthiness, explicit conversion, coercion, equality, and comparison edge cases. https://foxipa.com/en/javascript/learn/control-flow-and-declarations/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/control-flow-and-declarations/ Learn how JavaScript chooses execution paths, creates block-scoped bindings, exits functions, handles exceptions, and applies automatic semicolon insertion. https://foxipa.com/en/javascript/learn/scope-environments-closures/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/scope-environments-closures/ Learn how JavaScript resolves names through lexical scope, how environments nest, and why closures preserve access to surrounding bindings. https://foxipa.com/en/javascript/learn/function-objects-and-this/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/function-objects-and-this/ Understand function objects, callable versus constructible functions, call-site this, arrow functions, call/apply/bind, and constructor calls. https://foxipa.com/en/javascript/learn/objects-and-prototypes/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/objects-and-prototypes/ Understand own properties, prototype chains, shared methods, constructor prototypes, classes, descriptors, and deliberate prototype control. https://foxipa.com/en/javascript/learn/arrays/ Sun, 27 Sep 2026 03:40:00 +0000 https://foxipa.com/en/javascript/learn/arrays/ Build a precise mental model of JavaScript arrays, mutation, shallow copying, transformation, reduction, searching, sorting, modern non-mutating methods, Array.from, Array.fromAsync, grouping, and sparse-array behavior. https://foxipa.com/en/javascript/learn/property-descriptors-accessors-integrity/ Sun, 27 Sep 2026 00:00:00 +0000 https://foxipa.com/en/javascript/learn/property-descriptors-accessors-integrity/ Understand data and accessor property descriptors, getters and setters, precise property definition, and object integrity controls. https://foxipa.com/en/javascript/learn/map-set-weak-collections/ Sun, 27 Sep 2026 12:30:00 +0000 https://foxipa.com/en/javascript/learn/map-set-weak-collections/ Choose keyed collections by behavior: Map key/value association, Set membership and set algebra, and weak collections for non-enumerable object or symbol associations. https://foxipa.com/en/javascript/learn/proxy-reflect-metaprogramming/ Sun, 27 Sep 2026 05:27:00 +0000 https://foxipa.com/en/javascript/learn/proxy-reflect-metaprogramming/ Understand Proxy traps, Reflect forwarding, prototype and extensibility operations, proxy invariants, revocation, and practical metaprogramming boundaries. https://foxipa.com/en/javascript/learn/iterators-and-generators/ Sun, 27 Sep 2026 04:24:00 +0000 https://foxipa.com/en/javascript/learn/iterators-and-generators/ Understand the iterable and iterator protocols, build custom iterables, use generators and delegation, reason about iterator closing, and compose lazy modern iterator pipelines. https://foxipa.com/en/javascript/learn/errors-defensive-control-flow/ Sun, 27 Sep 2026 04:24:00 +0000 https://foxipa.com/en/javascript/learn/errors-defensive-control-flow/ Handle JavaScript exceptions deliberately: throw and catch Error objects, preserve causes, clean up with finally, define custom errors, aggregate failures, and design defensive control-flow boundaries. https://foxipa.com/en/javascript/learn/promises/ Sun, 27 Sep 2026 04:30:00 +0000 https://foxipa.com/en/javascript/learn/promises/ Understand Promise states, resolution, chaining, rejection propagation, cleanup, combinators, thenable assimilation, and modern Promise APIs. https://foxipa.com/en/javascript/learn/async-functions-and-iteration/ Sun, 27 Sep 2026 04:45:00 +0000 https://foxipa.com/en/javascript/learn/async-functions-and-iteration/ Understand async functions, await, sequencing versus concurrency, asynchronous errors, async iterables, for await...of, async generators, and Array.fromAsync. https://foxipa.com/en/javascript/learn/javascript-program-architecture/ Sun, 27 Sep 2026 06:00:00 +0000 https://foxipa.com/en/javascript/learn/javascript-program-architecture/ Design maintainable JavaScript programs by defining module responsibilities, public APIs, dependency direction, state ownership, side-effect boundaries, lifecycle, and composition roots. https://foxipa.com/en/javascript/learn/javascript-scripts-and-modules/ Sun, 27 Sep 2026 14:00:00 +0000 https://foxipa.com/en/javascript/learn/javascript-scripts-and-modules/ Understand ECMAScript Scripts and Modules, import/export forms, live bindings, module namespaces, dependency linking and evaluation, cycles, top-level await, dynamic import, import attributes, and JSON modules without confusing language semantics with browser loading. https://foxipa.com/en/javascript/learn/unicode-aware-strings/ Sun, 27 Sep 2026 06:45:00 +0000 https://foxipa.com/en/javascript/learn/unicode-aware-strings/ Understand UTF-16 code units, Unicode code points, surrogate pairs, well-formed strings, normalization, and the difference between code points and user-perceived text. https://foxipa.com/en/javascript/learn/explicit-resource-management/ Sun, 27 Sep 2026 14:00:00 +0000 https://foxipa.com/en/javascript/learn/explicit-resource-management/ Learn using, await using, Symbol.dispose, Symbol.asyncDispose, DisposableStack, AsyncDisposableStack, scope-based cleanup, ownership transfer, and deterministic resource lifetimes. https://foxipa.com/en/javascript/learn/global-object-standard-global-functions/ Sun, 27 Sep 2026 13:30:00 +0000 https://foxipa.com/en/javascript/learn/global-object-standard-global-functions/ Understand globalThis, the global environment boundary, eval, numeric parsing and testing, URI encoding/decoding, and legacy global functions without duplicating existing built-in lessons. https://foxipa.com/en/javascript/learn/regular-expressions/ Sun, 27 Sep 2026 11:30:00 +0000 https://foxipa.com/en/javascript/learn/regular-expressions/ Learn ECMAScript regular-expression syntax, matching, captures, flags, lookarounds, Unicode modes, dynamic patterns, and stateful matching. https://foxipa.com/en/javascript/learn/json-and-structured-data/ Sun, 27 Sep 2026 10:30:00 +0000 https://foxipa.com/en/javascript/learn/json-and-structured-data/ Learn JSON syntax, parsing, serialization, revivers, replacers, formatting, failure handling, numeric limits, and durable data contracts in JavaScript. https://foxipa.com/en/javascript/learn/symbols-and-property-protocols/ Sun, 27 Sep 2026 09:30:00 +0000 https://foxipa.com/en/javascript/learn/symbols-and-property-protocols/ Learn Symbol identity, Symbol-keyed properties, property-key reflection, the global Symbol registry, well-known Symbols, and standardized JavaScript protocol hooks. https://foxipa.com/en/javascript/learn/dates-and-modern-time/ Sun, 27 Sep 2026 10:00:00 +0000 https://foxipa.com/en/javascript/learn/dates-and-modern-time/ Understand the ECMAScript Date time-value model, parsing and UTC/local interpretation, mutation and serialization, then learn the modern Temporal types for exact instants, calendar values, time zones, and durations. https://foxipa.com/en/javascript/learn/internationalization-intl/ Sun, 27 Sep 2026 12:30:00 +0000 https://foxipa.com/en/javascript/learn/internationalization-intl/ Learn the ECMAScript Internationalization API: locale negotiation, number and date formatting, comparison, lists, plural rules, relative time, locale identifiers, display names, segmentation, formatter parts, and capability detection. https://foxipa.com/en/javascript/learn/arraybuffer-typedarrays-dataview/ Sun, 27 Sep 2026 12:30:00 +0000 https://foxipa.com/en/javascript/learn/arraybuffer-typedarrays-dataview/ Learn ECMAScript binary data storage and views: ArrayBuffer, TypedArrays, DataView, byte offsets, element conversions, endianness, BigInt views, resizable buffers, and transfer semantics. https://foxipa.com/en/javascript/learn/sharedarraybuffer-atomics/ Sun, 27 Sep 2026 16:00:00 +0000 https://foxipa.com/en/javascript/learn/sharedarraybuffer-atomics/ Learn ECMAScript shared memory, SharedArrayBuffer, atomic read-modify-write operations, waiting and notification, and the memory-model boundary between shared storage and synchronization. https://foxipa.com/en/javascript/learn/source-text-lexical-grammar-parsing/ Sun, 27 Sep 2026 04:30:00 +0000 https://foxipa.com/en/javascript/learn/source-text-lexical-grammar-parsing/ Understand how ECMAScript source text is recognized as input elements and parsed as a Script or Module, including tokens, lexical goals, comments, literals, line terminators, directive prologues, and automatic semicolon insertion. https://foxipa.com/en/javascript/learn/execution-model-contexts-realms-jobs-agents/ Sun, 27 Sep 2026 10:30:00 +0000 https://foxipa.com/en/javascript/learn/execution-model-contexts-realms-jobs-agents/ Understand ECMAScript's runtime execution model through execution contexts, Realms, Jobs, agents, host hooks, and forward progress without conflating it with browser event-loop behavior. https://foxipa.com/en/javascript/learn/classes/ Sun, 27 Sep 2026 03:40:00 +0000 https://foxipa.com/en/javascript/learn/classes/ Understand JavaScript classes without losing sight of the object model: constructors, methods, fields, private elements, inheritance, super, static members, and initialization order.