I didnt understand the logic in this challange

JavaScript
1

Tell us what’s happening:

Your code so far


function nextInLine(arr, item) {
// Only change code below this line

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 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36.

Challenge: Stand in Line

Link to the challenge:

2

Hello there.

Do you have a question?

If so, please edit your post to include it in the Tell us what’s happening section.

The more information you give us, the more likely we are to be able to help.

3

i have passed test by example but did’nt understood logic can you explain each line code briefly.

4

can you explain first what you understand?

5

my questions are where arr is defined and how is 6 defined as item and what is testArr and how it is used in above function

6

arr and item are defined as function parameters

they get a value when the function is called:

testArr is defined in the editor:

7

oh! thanks a lot dont know why was i unable to understand at first