Slice and Splice - Need help

JavaScript
1

Tell us what’s happening:
Hello,

My code isn’t going through the tests, even though console.log shows the correct results.

Here’s what I did -
Since the original arrays should remain the same, I created a duplicate of arr2. Then using splice(), I inserted arr1 into the new array.

What am I doing wrong here?

Your code so far

js

function frankenSplice(arr1, arr2, n) {
  // It's alive. It's alive!
  let newArr = arr2.slice();
  newArr.splice(n, 0, arr1);
  return newArr;  
}

frankenSplice([1, 2, 3], [4, 5], 1);

console.log(frankenSplice([1, 2, 3], [4, 5], 1));

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36.

Link to the challenge:

2

The fCC challenge console won’t show you the real output. Do you mean the fCC console?

3

Do you mean the fCC console?

Yes.

4

The problem is you are splicing in the entire arr2 instead of the elements of arr2. Your frankenSplice returns [ 4, [ 1, 2, 3 ], 5 ] instead of [4, 1, 2, 3, 5].

If you look at your browser’s console (Ctrl+Shft+J in Chrome) you would see this.

1 Like
5

On the challenge page, right-click and select ‘inspect’. Then choose ‘console’. There you can view the real output.

1 Like
6

Oh. Now it makes sense. Thank you so much! I’ll make changes to my code.