Iteration Using For Loop In JavaScript

Hello everyone, welcome to nkcoderz.com. In this article we will going to discuss about Iteration Using For Loop In JavaScript.

Iteration Using For Loop In JavaScript

Iteration is the process of repeating a block of code a specific number of times. One of the most commonly used ways to iterate in JavaScript is through the use of a for loop.

A for loop has three parts: the initializer, the condition, and the updater. The initializer is used to set the starting value of the loop. The condition is used to check if the loop should continue running. The updater is used to change the value of the loop after each iteration.

Here is an example of a for loop that will iterate 5 times and print the current iteration number:

Code For Iteration Using For Loop

for (let i = 0; i < 5; i++) {
    console.log("Iteration: " + i);
}

In this example, the initializer is let i = 0, the condition is i < 5, and the updater is i++. The loop will start with i set to 0, check if i is less than 5, and if it is, it will execute the code block and then increment i by 1. This process will continue until i is no longer less than 5.

For loops can also be used to iterate over arrays. Here is an example of a for loop that will iterate over an array and print each element:

let myArray = [1, 2, 3, 4, 5];

for (let i = 0; i < myArray.length; i++) {
    console.log(myArray[i]);
}

Explanation

In this example, the initializer is let i = 0, the condition is i < myArray.length, and the updater is i++. The loop will start with i set to 0, check if i is less than the length of the myArray array, and if it is, it will execute the code block and print the element at the current index of the array and then increment i by 1.

Conclusion

For loops are a powerful tool for iteration in JavaScript and can be used to perform a wide range of tasks, from simple operations like printing numbers to more complex operations like manipulating arrays and objects.

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