Arrays are used to store multiple values in a single variable. Very often, you need to process each value in the array one by one.
Loops make this easy. By combining loops with arrays, you can display data, perform calculations, and apply logic to every item in a list.
Looping through arrays is a core skill for every JavaScript developer because it is used in almost all real-world applications.
Common Ways to Loop Through Arrays
- Using for loop
- Using while loop
- Using for...of loop
- Using forEach method
In this lesson, we will focus on the most common beginner-friendly approaches.
This example uses a for loop to go through each item in the fruits array. The loop runs from index 0 to the last item in the array.
This is the most basic and commonly used way to loop through arrays.
The for...of loop directly gives you each value from the array. You do not need to use indexes.
This makes the code shorter and easier to read, especially for beginners.
These examples show different ways to loop through arrays and access each element.
By mastering array loops, students gain the ability to handle lists of data, which is essential for building real-world applications like to-do lists, dashboards, and reports.