Web Design& development programming Studio: JavaScript Arrays

Tuesday, June 13, 2023

Why Use Arrays?

If you have a list of items (a list of car names, for example), storing the cars in single variables could look like this:

let car1 = "Saab";
let car2 = "Volvo";
let car3 = "BMW";

However, what if you want to loop through the cars and find a specific one? And what if you had not 3 cars, but 300?

The solution is an array!

An array can hold many values under a single name, and you can access the values by referring to an index number.

Using an array literal is the easiest way to create a JavaScript Array.

Syntax:

const array_name = [item1, item2, ...]; <!DOCTYPE html>

<html>

<body>

<h1>JavaScript Arrays</h1>

const cars = ["Saab", "Volvo", "BMW"];

document.getElementById("demo").innerHTML = cars;

</script>

</body>

</html>