I am having trouble with Stand in line

1

Hello everybody I am new free code camper and I have a problem with this subject.
I have been working on the problem for a few days now and I think I understand the problem, but after I tested the program I got no pass to the next subject.

Here is the code:
function nextInLine(arr, item) {
// Your code here
testArr.push(item);
var removedItem = testArr.shift();
return removedItem; // Change this line
}

// Test Setup
var testArr = [5,6,7,8,9];

// Display Code
console.log("Before: " + JSON.stringify(testArr));
console.log(nextInLine(testArr, 1)); // Modify this line to test
console.log("After: " + JSON.stringify(testArr));

Please, I need to know what am I doing wrong is there something I am missing?
Thank you in advance.

2

You are using a global testArr variable. Why? You need to use the parameter they give you (in this case the arr parameter).

function nextInLine(arr, item) {
// Your code here
arr.push(item);
var removedItem = arr.shift();
return removedItem; // Change this line
}

// Test Setup
var testArr = [5,6,7,8,9];

// Display Code
console.log("Before: " + JSON.stringify(testArr));
console.log(nextInLine(testArr, 1)); // Modify this line to test
console.log("After: " + JSON.stringify(testArr));
3

Thank you IsaacAbrahamson! That part I didn’t think of it. I was focusing in the Display area code more than the actual function, probably burned from not stepping back. Anyway, thank you very much for the fast responding.

4

this helped me too. Thanks! I didn’t realize that you can take manipulate one parameter by calling it as you did.

5

You should read the array.prototype docs on MDN. Some methods mutate the array (in other words, change the array itself like push), and others like join and slice return a new array, which you then have to assign to a value.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/prototype#Mutator_methods

1 Like
6

ok great. thanks for pointing me to this!