Return the First Element in an Array in JavaScript

Create a function that takes an array containing only numbers and return the first element.
Examples:
getFirstValue([1, 2, 3]) ➞ 1


getFirstValue([80, 5, 100]) ➞ 80
getFirstValue([-500, 0, 50]) ➞ -500
Notes:
The first element in an array always has an index of 0.
Code:
 
<script>
function getFirstValue(array){
return array[0]; //in array indexing starts with zero.
}
 
var array = [45, 65, 98, 100];
console.log(getFirstValue(array)); //this will print 45 in console.
</script>