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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Review Adding and Removing Items from Arrays

Posted by channonhall
channonhall
12,247 Points

I've been workin' on this for days now can someone help me? Can't seem to find the answer

https://teamtreehouse.com/library/javascript-arrays-and-loops/tracking-multiple-items-with-arrays/review-adding-and-removing-items-from-arrays

I don't know the answers to this quiz and i've been working for days so can someone help me out?

Maybe I'm Just a bit dumb xD

Thanks! Channon

1 Answer

Marco Amadio
Marco Amadio
4,882 Points
Marco Amadio
Marco Amadio
4,882 Points

Hi Channon.

In this quiz you have to use some array methods:

The unshift method adds an element at the beginning of an array. e.g.

var array = [1, 2, 3];
array.unshift(0);

/* The results will be */

[0, 1, 2, 3]

The push method adds an element at the end of an array. e.g.

var array = [1, 2, 3];
array.push(4);

/* The results will be */

[1, 2, 3, 4]

The shift method removes the first element of an array. e.g.

var array = [0, 1, 2, 3];
array.shift();

/* The result will be */

[1, 2, 3]

The pop method removes the last element of an array. e.g.

var array = [1, 2, 3, 4];
array.pop();

/* The result will be */

[1, 2, 3]

The length porperty will return the number of elements in an array.

var array = [0, 1, 2, 3];
var length = array.length;

/* length variable's value will be 4 */

Hope it helps.

john larson
john larson
16,594 Points

Marco, I just have to say how beautifully organized your answer is. I love that.

Marco Amadio
Marco Amadio
4,882 Points
Marco Amadio
Marco Amadio
4,882 Points

Thank you! I'm glad to be of help :)

channonhall
channonhall
12,247 Points

Oh thanks! So I did mixed them up xD

Thanks Marco!

Marco Amadio
Marco Amadio
4,882 Points
Marco Amadio
Marco Amadio
4,882 Points

Channon, you're welcome ;)