Master JavaScript from basics to advanced
A complete tutorial on the JavaScript spread and rest operators. Covers the difference between the two uses of the ... syntax, spread in arrays and objects, rest in function parameters and destructuring, shallow copy gotchas, and practical patterns for merging, cloning, and collecting arguments.
A deep dive into copying nested objects with the JavaScript spread operator. Covers shallow vs deep copy behavior, why nested references are shared, manual deep-copy patterns, structuredClone, JSON round-trip limitations, recursive cloning, and library-based solutions for production code.
A complete guide to JavaScript ES6 modules. Learn the import and export syntax, how modules differ from scripts, named vs default exports, re-exporting, module scope and strict mode, browser module support with type=module, and organizing large codebases with ES modules.
A complete tutorial on JavaScript default exports. Covers the export default syntax for functions, classes, objects, and expressions, how default imports work with any local name, when to prefer defaults over named exports, mixing defaults with named, and common pitfalls to avoid.
A complete tutorial on JavaScript named exports. Covers inline and bottom-of-file export syntax, import with renaming, namespace imports, re-exporting, tree-shaking benefits, barrel files, and why many teams prefer named exports over defaults for large codebases.
A complete guide to dynamic imports in JavaScript. Covers the import() expression, lazy loading modules on demand, code splitting for performance, conditional and event-driven loading, error handling, loading default and named exports dynamically, and integration with bundlers.
An advanced guide to JavaScript optional chaining. Covers the ?. operator for property access, method calls, and bracket notation, short-circuit evaluation, combining with nullish coalescing, optional chaining in arrays, deeply nested API responses, and performance considerations.
An advanced tutorial on the JavaScript nullish coalescing operator (??). Covers the difference between ?? and ||, handling null vs undefined vs falsy values, combining with optional chaining, nested defaults, assignment patterns, and practical use cases for configuration and API response handling.
A complete guide to JavaScript logical assignment operators. Covers ||=, &&=, and ??= syntax, how each differs from regular assignment, short-circuit behavior, practical default-filling and conditional-update patterns, combining with optional chaining, and migration from older idioms.
A complete guide to deploying JavaScript modules and applications using the GitHub Student Developer Pack. Covers publishing npm packages with GitHub Packages, deploying to GitHub Pages, setting up CI/CD with GitHub Actions, using free credits from partners like Vercel, Netlify, and Railway, and managing versioned module releases.
A deep dive into JavaScript tagged template literals. Covers tag function anatomy, the strings and values parameters, raw strings, building custom HTML sanitizers, i18n formatters, CSS-in-JS helpers, SQL query builders, and advanced patterns for DSL creation with template tags.
A full tutorial on building custom string parsers in JavaScript. Covers tokenizing, recursive descent parsing, building an AST, parsing arithmetic expressions, parsing JSON manually, error handling with line/column tracking, and when to use custom parsers vs regex or existing libraries.