Basic JavaScript: Stand in LinePassed problem

Tell us what’s happening:
I didn’t get this question correctly i.e what is the use of var testArr = [1,2,3,4,5]; in this question.
Write a function nextInLine which takes an array ( arr ) and a number ( item ) as arguments.

Add the number to the end of the array, then remove the first element of the array.

The nextInLine function should then return the element that was removed.

Your code so far

function nextInLine(arr, item) {
// Only change code below this line
var removed = arr.shift();
return removed;
return item;
// Only change code above this line


// Setup
var testArr = [1,2,3,4,5];

// Display code
console.log("Before: " + JSON.stringify(testArr));
console.log(nextInLine(testArr, 6));
console.log("After: " + JSON.stringify(testArr));

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36.

Challenge: Stand in Line

Link to the challenge:

this line is creating an array so that the function can be tested

when the function is called later this is the array passed in