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JavaScript JavaScript Array Iteration Methods Array Manipulation Practice filter()

Posted by Peter Huang
Peter Huang
5,427 Points

Need help with this challenge

Need answer for this please and thank you

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

// century20 should be: [1989, 2000, 1999, 1973]
// Write your code below

years.filter(year => year.charAt(0) === "20");

1 Answer

Steven Parker
Steven Parker
231,264 Points
Steven Parker
Steven Parker
231,264 Points

Heres a few hints:

  • the years array contains numbers, and numbers don't have a charAt method
  • the character at position 0 of any string can never equal "20" because that's two characters
  • just testing the first character (or first digit) isn't enough to determine a 20th century year
  • remember that "20th century" includes years from 1901 to 2000