I get the correct answer but I can't pass the challenge

let newArr = [];

function steamrollArray(arr) {

  for(let item in arr){

    if(Array.isArray(arr[item])){

      steamrollArray(arr[item]);

    }else{

      newArr.push(arr[item]);

    }

  }

  return newArr;

}

this is my code for the steamroller Javascript algorithm scripting challenge, I’ve console.logged the output with all the test inputs and it comes out right, but somehow I can’t pass the challenge.

Please include the challenge link. Next time when you have a question about a specific challenge as it relates to your written code for that challenge, just click the Ask for Help button located on the challenge. It will create a new topic with all code you have written and include a link to the challenge also. You will still be able to ask any questions in the post before submitting it to the forum.

Thank you.

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Your code contains global variables that are changed each time the function is run. This means that after each test completes, subsequent tests start with the previous value. To fix this, make sure your function doesn’t change any global variables, and declare/assign variables within the function if they need to be changed.

Example:

var myGlobal = [1];
function returnGlobal(arg) {
  myGlobal.push(arg);
  return myGlobal;
} // unreliable - array gets longer each time the function is run

function returnLocal(arg) {
  var myLocal = [1];
  myLocal.push(arg);
  return myLocal;
} // reliable - always returns an array of length 2
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