JavaScript Interview Questions

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and

In JavaScript, setTimeout and setInterval are both methods used to execute code after a certain amount of time has passed.

In JavaScript, join is a method used on arrays to concatenate all of its elements into a single string. This

The split method in JavaScript is used to divide a string into an array of substrings, based on a specified

In JavaScript, the slice method is used to create a shallow copy of a portion of an array or a

In JavaScript, a Higher-Order Function is a function that either: Takes one or more functions as arguments, or Returns a

async and await are modern JavaScript keywords that enable you to write asynchronous code in a more readable and manageable

Template literals are a feature in JavaScript that provide an easier and more readable way to work with strings. They

The for…of loop in JavaScript is used to iterate over iterable objects like arrays, strings, maps, sets, etc. It provides

In JavaScript, a Set is a built-in object that allows you to store unique values of any type, whether primitive

The spread operator in JavaScript is denoted by three dots (…). It allows an iterable like an array expression or

Promise chaining in JavaScript refers to the practice of chaining multiple asynchronous operations together using promises. This allows you to

In JavaScript, a promise is an object representing the eventual completion or failure of an asynchronous operation. It allows you

In JavaScript, synchronous and asynchronous refer to different ways in which code is executed and how tasks are handled. Synchronous

In JavaScript Mutable objects can be changed or modified after creation & Immutable objects cannot be changed directly Primitive data