# Accessing Array Elements in JavaScript

Accessing the elements of an array is similar to accessing the characters of a string. Each element of the array has its own index: the first element has the index `0`, the second has the index `1`, and so on. These indices are called also keys of the array elements. Let's look at an example. Let's say we have the following array:

`let arr = ['a', 'b', 'c'];`

Let's display its elements:

`console.log(arr[0]); // shows 'a' console.log(arr[1]); // shows 'b' console.log(arr[2]); // shows 'c'`

Create an array with elements `1`, `2`, `3`. Display each of these elements on the screen.

Given the following array:

`let arr = [1, 2, 3];`

Display each of its elements.

Given the following array:

`let arr = [1, 2, 3];`

Display the sum of the elements of this array on the screen.

Given the following array:

`let arr = ['a', 'b', 'c', 'd'];`

Use this array to output the following string:

`'a+b+c+d'`
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