From the example above, you can read: Expression 1 sets a variable before the loop starts (let i = 0). Expression 2 defines the condition for the loop to run (i must be less than 5). Expression 3 increases a value (i++) each time the code block in the loop has been executed.

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.

Dec 26, 2024 · Loops in JavaScript are used to reduce repetitive tasks by repeatedly executing a block of code as long as a specified condition is true. This makes code more concise and efficient.

Apr 3, 2025 · The for statement creates a loop that consists of three optional expressions, enclosed in parentheses and separated by semicolons, followed by a statement (usually a block statement) to be executed in the loop.

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.

for — loops through a block of code until the counter reaches a specified number. for…in — loops through the properties of an object. for…of — loops over iterable objects such as arrays, strings, etc. In the following sections, we will discuss each of these loop statements in detail.

Nov 19, 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.

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. for Loop Syntax for (initialization; condition; finalExpre...

May 27, 2022 · In this article, we will learn what for loops are, how they work, and why we use them. We'll also keep in mind that there are several types of loops, each of which performs a specific function even though they can almost all perform …

Aug 30, 2024 · Loops allow us to repeatedly execute blocks of code in an efficient manner. 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.