Oct 11, 2016 · While-loop Syntax: while(!done) { //Some code goes here } I would use this loop when I am NOT SURE how many ITERATIONS I might need to carry out. Examples: Waiting for user to input correct input values and keep looping until he/she inputs the proper value. Do-While loop Syntax: do { //Some code here } while(!done);

Jun 19, 2022 · We covered 3 types of loops: while – The condition is checked before each iteration. do..while – The condition is checked after each iteration. for (;;) – The condition is checked before each iteration, additional settings available. To make an “infinite” loop, usually the while(true) construct is used.

The While Loop. The while loop loops through a block of code as long as a specified condition is true. Syntax

Apr 10, 2025 · Loops offer a quick and easy way to do something repeatedly. This chapter of the JavaScript Guide introduces the different iteration statements available to JavaScript. You can think of a loop as a computerized version of the game where you tell someone to take X steps in one direction, then Y steps in another.

Jan 30, 2025 · In this article, I'll walk you through the main types of loops in JavaScript. We'll look at how each one works, when to use them, and how to choose the right one for your specific needs with examples based on real-world scenarios.

In JavaScript, there are currently two types of loop structures: The "for" loop and the "while" loop. They both come in several variations, and in this article we'll dig deeper into how they work and how you can use them.

Feb 15, 2020 · Loops are used in JavaScript to perform repeated tasks based on a condition. Conditions typically return true or false. A loop will continue running until the defined condition returns false. The for loop consists of three optional expressions, followed by a code block:

JavaScript now supports five different types of loops: while — loops through a block of code as long as the condition specified evaluates to true. do…while — loops through a block of code once; then the condition is evaluated. If the condition is true, the statement is repeated as long as the specified condition is true.

Dec 11, 2024 · In this comprehensive guide aimed at beginners, we will cover the ins and outs of the following loop constructs with plenty of examples: We will also look at powerful concepts like nesting loops, using loops asynchronously, and optimizing …

Aug 30, 2024 · In JavaScript, there are several types of loops that serve different purposes – the for loop, while loop, do…while loop, and for…in and for…of loops. Each iteration of a loop is called an iteration. The code that gets executed on each iteration is called the loop body.