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Loops in Javascript

A Comprehensive Guide to JavaScript Loops

Patrick Karsh
3 min readFeb 12, 2024
Don’t use break with this loop.

Loops in JavaScript are a fundamental concept that allows developers to execute a block of code repeatedly under certain conditions. They are an essential part of making applications more efficient and dynamic. In JavaScript, there are several types of loops, each with its use case and syntax. This article will explore the different loops available in JavaScript, including for, while, do...while, and for...of loops, as well as how to control these loops using break and continue statements.

The for Loop

The for loop is one of the most common loops in JavaScript. It repeats a block of code a specific number of times. It is particularly useful when the number of iterations is known before entering the loop. The syntax for a for loop is as follows:

Initialization: Here, you typically define and set your loop counter.

Condition: The loop continues as long as this condition evaluates to true.

Post-expression: Executes after each iteration, often used to update the loop counter.

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Patrick Karsh
Patrick Karsh

Written by Patrick Karsh

NYC-based Ruby on Rails and Javascript Engineer leveraging AI to explore Engineering. https://linktr.ee/patrickkarsh

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