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 14, 2019 · You can define a var, e.g. result holding the value true, then executing the for loop and checking the condition using the if statement. Once condition fails, set result to false and break out of the for loop.

Nov 12, 2018 · Instead of using for loop, if you only wish that the boolean variable must be switched on satisfying only one condition, you can use some() method. Using this, the loop will not iterate through all the objects and will stop once your condition is satisfied.

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 use the Boolean() function to find out if an expression (or a variable) is true: Or even easier: The chapter JS Comparisons gives a full overview of comparison operators. The chapter JS If Else gives a full overview of conditional statements. Here are some examples:

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.

May 17, 2024 · For loop is a control flow statement in programming that allows you to execute a block of code repeatedly based on a specified condition. It is commonly used when you know how many times you want to execute a block of code.

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.

Master the JavaScript for loop and learn how to iterate over arrays and perform repetitive tasks efficiently. This tutorial covers the usage of the for loop, enabling you to control iterations, access array elements, and execute code block for a specified number of times in JavaScript.

The for loop repeatedly executes a block of statements until a particular condition is true. Syntax: initialization statement: is used to initialize the loop variable. boolean expression: is used for condition check whether returns true or false. statement: is used for either increment or decrement of the loop variable. JavaScript for loop example: