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.

JavaScript for loop Syntax. The syntax of the for loop is: for (initialExpression; condition; updateExpression) { // for loop body } Here, initialExpression - Initializes a counter variable. condition - The condition to be evaluated. If true, the body of the for loop is executed. updateExpression - Updates the value of initialExpression.

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. For loop to print table of a number. For loop to print elements of an array.

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.

Loop (iterate over) an array to collect car names: The loop starts in position 0 (let i = 0). The loop automatically increments i for each run. The loop runs as long as i < cars.length. More examples below. The for statement defines a code block that is executed as long as a condition is true.

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}

This tutorial shows you how to use the JavaScript for loop to create a loop that executes a block of code repeatedly in a specific number of times.

The syntax of for loop is JavaScript is as follows − for (initialization; condition; iteration) { Statement(s) to be executed if condition is true } Above all 3 statements are optional.

Feb 24, 2025 · In JavaScript, a for loop allows you to repeat a block of code again and again in your program. It’s like checking every item in the list or repeating any task multiple times. In this blog, we will discuss what JavaScript for loop is, how it works, and how you can use it …

The basic syntax of a JavaScript for loop is: // code block . This may look confusing at first, so let‘s break it down: Typically used to initialize a counter variable, usually starting at 0 or 1. This only happens once at the start. An expression that is checked before each iteration. As long as this evaluates to true, the loop will continue.