JavaScript supports different kinds of loops: The for statement creates a loop with 3 optional expressions: Expression 1 is executed (one time) before the execution of the code block. Expression 2 defines the condition for executing the code block. Expression 3 is executed (every time) after the code block has been executed.

Dec 26, 2024 · JavaScript for loop is a control flow statement that allows code to be executed repeatedly based on a condition. It consists of three parts: initialization, condition, and increment/decrement. [GFGTABS] javascript // for loop begins when x=2 // and runs till x <= 4 for (let x = 2; x <= 4; x++)

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.

In JavaScript, the for loop is used for iterating over a block of code a certain number of times or over the elements of an array. In this tutorial, you will learn about the JavaScript for loop with the help of examples.

Apr 11, 2025 · Understand the purpose of loops — a code structure that allows you to do something very similar many times without repeating the same code for each iteration. General loop types such as for and while. Looping through collections with constructs like for...of and map(). Breaking out of loops and continuing. Why are loops useful?

May 27, 2022 · For Loops in JavaScript. The for loop is an iterative statement which you use to check for certain conditions and then repeatedly execute a block of code as long as those conditions are met. Flowchart for the for loop. Syntax of a for loop for (initialExpression; condition; updateExpression) { // for loop body: statement} The code block above ...

Jan 7, 2019 · Many times in your code you require to loop through an array of numbers, strings or object. There are just so many ways to do it, and this tutorial aims to teach you all of them so that you become a Master of ‘Looping in JavaScript’. See this ninja cat who is …

The basic idea behind a loop is to automate the repetitive tasks within a program to save the time and effort. JavaScript now supports five different types of loops: while — loops through a block of code as long as the condition specified evaluates to true.

Jul 28, 2023 · Welcome to this comprehensive guide on JavaScript loops, the beating heart of any complex JavaScript code. Whether it’s processing an array, iterating over the properties of an object, or fetching and handling data from an API, loops form an indispensable part of any JavaScript developer’s toolkit.

Aug 12, 2024 · In JavaScript, there are 7 types of loops that can be used to execute a block of code repeatedly. Each loop has its own specific use case and syntax, and choosing the right one depends on the problem you’re trying to solve.