I can't delete an array nested inside another array

JavaScript
1

I feel like I am a step away from getting it right
the console tells me that there is something wrong with arr.length

function filteredArray(arr, elem) {
let newArr = ;
// Only change code below this line
for (let i = 0; i < arr.length; i++) {
for (let j = 0; j < arr[i].length; j++) {
if (arr[i][j] === elem) {
console.log(arr.splice(arr[i], arr.length));
newArr = arr;
}
}
}
// Only change code above this line
return newArr;
}
filteredArray(
[
[3, 2, 3],
[1, 6, 3],
[3, 13, 26],
[19, 3, 9],
],
3
);

2

Welcome to the forum

It looks like your code is mutating the original array. Is this what you want?

1 Like
3

Yes I want to delete any nested array that contains number 3
It is a challenge here on the javascript course

4

If you want to change the original array, why do you need to return newArr?

What challenge is this for, and are you supposed to change the source array?

5

I am still learning. I thought this is the answer to the question…how am i supposed to fix this to answer the question

6

Without knowing which challenge this is for, here are some guesses.

  • The challenge may not want you to alter the original array.

  • You have to return newArray, which doesn’t contain a certain element.

  • The source array is nested, so you need a way to iterate though the array.

  • You have to check for a certain element - write down the different ways to do this.

  • What are the alternatives to deleting items?

We cannot give solutions on the forum.
I’ve spent days working on a single problem, the pay off is that I learn a lot more, and the next challenging problem is a little easier.

If you want, try out some different ways to approach the problem. If you get stuck, just ask the forum for help.

3 Likes
7

Thanks a lot for your help👍

1 Like
8

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