Loops can execute a block of code a number of times. Loops are handy, if you want to run the same code over and over again, each time with a different value. Often this is the case when working with arrays: JavaScript supports different kinds of loops: The for statement creates a loop with 3 optional expressions:

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. Suppose we want to print 'Hello World' five times.

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.

May 27, 2022 · Loops are computer programs that execute a set of instructions or a block of code a certain number of times without having to write it again until a certain condition is met. In other words, loops let your code execute one or more statements as many times as desired.

While Loop. A while loop is best to use when you don't know how many times the code should run.. The while loop is the most intuitive loop type because it resembles many things we do in our every day life:. Keep walking (taking new steps) until you reach your destination. As long as the pot is dirty, continue washing it. Keep filling the tank of the car until it is full.

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.

In JavaScript, the for loop is used for iterating over a block of code a certain number of times, or to iterate over the elements of an array. Here's a quick example of the for loop. You can read the rest of the tutorial for more details. console.log("Hello, world!"); // Output: // …

In this tutorial you will learn how to repeat a series of actions using loops in JavaScript. Loops are used to execute the same block of code again and again, as long as a certain condition is met. The basic idea behind a loop is to automate the repetitive tasks within a …

Apr 2, 2025 · In JavaScript, loops are handy if you want to run the same code repeatedly, each time with different values. You can choose the right loop based on: When the number of iterations is known, then use the for loop. When the condition depends …