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JavaScript JavaScript Array Iteration Methods Array Manipulation Practice filter()

Madeline Yao
Madeline Yao
Full Stack JavaScript Techdegree Student 9,611 Points

What is the Bug in the Code?

Hello everyone, I just did the code challenge. I could not find anything that made my code not run well. Could anyone please tell me what the problem is behind it? Thanks!

const years = [1989, 2015, 2000, 1999, 2013, 1973, 2012];
let century20;

// century20 should be: [1989, 2000, 1999, 1973]
// Write your code below
century20 = years.map(year => {
    return true;
  }else {
    return false; 

1 Answer

Cooper Runstein
Cooper Runstein
11,837 Points

You're using map, not filter, so right now you're getting an array of booleans depending on the value at that index in the years array. You need to replace map with filter, and you can remove the else statement.