Destructuring black magic

JavaScript
1

Tell us what’s happening:
They say use spice to splice to make a new array with elements that sum to 10.
const arr = [2, 4, 5, 1, 7, 5, 2, 1];

// Only change code below this line
// they say the answer is:
arr.splice(1,4);
// but if you do that, the array becomes arr = [4,5,1,7] which sums to 17 not 10

// Only change code above this line

console.log(arr);
Describe your issue in detail here.

Your code so far


const arr = [2, 4, 5, 1, 7, 5, 2, 1];
// Only change code below this line
arr.splice(1,4);
// Only change code above this line
console.log(arr);

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.88 Safari/537.36

Challenge: Remove Items Using splice()

Link to the challenge:

2

splice method is used to remove elements!!

so if those elements are removed, what’s left with that array, and what that equates to?

3

They want the resulting array to sum up to 10. as far as I can tell, the resulting array according to their answer, is [4, 5, 1, 7] which sums to 17, not 10.

4

if you take out [4,5,1,7] from that array, original array is left with elements which will give you ‘10’!!

btw, splice method changes ‘original array’, you can learn more about it from here

5

omg, that is obtuse! The directions, not your explanation!

6

really?! but that solves it, right?

using `splice(1,4)’ i mean

7

You are logging out the array. So I don’t understand why do you believe it would be [4,5,1,7]

8

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