Intermediate concepts Javascript Questions

Learn how async/await simplifies asynchronous JavaScript code built on top of Promises.

Learn how call, apply, and bind control the "this" context and pass arguments to functions dynamically.

Understand closures in JavaScript — how inner functions remember variables from their parent scope.

Learn how destructuring assignment simplifies extracting values from arrays and objects.

Understand how the JavaScript event loop handles asynchronous operations and manages concurrency.

Understand higher-order functions — functions that take or return other functions for composable code.

Learn how map, filter, and reduce work in JavaScript and when to use each for transforming arrays.

Understand how Promises handle asynchronous operations in JavaScript and replace callback hell.

Understand how JavaScript inheritance works using the prototype chain and __proto__ references.

Understand how the this keyword behaves in different contexts — global, function, arrow, and class scopes.