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JavaScript JavaScript Arrays Store Multiple Values in an Array Remove Elements From an Array

The array assigned to the variable orderQueue contains a list of order numbers. Declare a new variable named shipping. R

The array assigned to the variable orderQueue contains a list of order numbers. Declare a new variable named shipping...

script.js
const orderQueue = ['1XT567437','1U7857317','1I9222528'];
const shipping = [0]
orderQueue.shift();

3 Answers

Cameron Childres
Cameron Childres
11,817 Points

Hi Natalia,

Your code uses const to assign shipping to an array and then separately removes the first element of orderQueue with shift(). Using const locks the shipping variable in to referencing the array [0] you've created, so you won't be able to reassign it to something else. We need to remove the first element '1XT567437' from orderQueue and assign it to shipping (as a string, not an array).

Since the shift() method removes the first element of an array and also returns that element, you can accomplish the goals here with one line:

const orderQueue = ['1XT567437','1U7857317','1I9222528'];
var shipping = orderQueue.shift();
// shipping is now equal to '1XT567437'

The first element of orderQueue will be removed and assigned directly to the variable shipping.

Hope this helps! Let me know if you have any questions.

Why did the instructor not lecture that "var shipping" is how we are to create the variable shipping?

Cameron Childres
Cameron Childres
11,817 Points

Let me rephrase -- you can use const, let, or var here. The issue is that you didn't assign the first element of the array to the variable. This also passes the task:

const orderQueue = ['1XT567437','1U7857317','1I9222528'];
const shipping = orderQueue.shift();

The important part is that orderQueue.shift() is assigned to shipping. This is accomplished by declaring the variable and setting it equal to (or assigning it to) orderQueue.shift().

looks more like const shipping now has the action of taking out the element But wasn't actually given the element otherwise wouldn't your agree that adding an element is suppose to be unshift and Not shift...there's no way anyone could have guessed this lol.