admin, Author at JS FAQ - JavaScript Guides Online

Vue child to parent communication with custom events via defineEmits. Pass data payloads. Create custom inputs with v-model, modelValue prop, and update:modelValue event.

Promises and Async-Await

How to create a promise in JavaScript

Promises and Async-Awaitasync, constructor, js promises, promise

JavaScript Promises, .then(), .catch(), and promise chaining for asynchronous code. Flatten callback hell and manage async error handling with sequential logic.

Code Quality: ESLint/Prettier

How to install ESLint in a JavaScript project

Code Quality: ESLint/Prettierconfig, eslint, install, quality

ESLint setup with npm scripts in package.json. Configuration for lint and lint:fix commands to analyze, target, and auto-fix JS/JSX files using the --fix flag.

Variables and Types

How to declare a variable in JavaScript using var, let, and const

Variables and Typesconst, js types, let, var, variables

JavaScript let, const, & var best practices. Simple rule: use const by default, let for reassignment, never var. Modern variable declaration for robust code.

JS Basics

How to write your first JavaScript program

JS Basicsbasics, hello world, intro, js basics

JavaScript's single-threaded, synchronous execution model. The call stack, execution context, and blocking behavior. Foundation for asynchronous JS patterns.