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JavaScript JavaScript Array Iteration Methods Array Manipulation Practice filter()

Keytron Brown
Keytron Brown
15,828 Points
Posted by Keytron Brown
Keytron Brown
15,828 Points

Help I dont know what to do next.

How do I get just the 20th century years out of this array?

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

century20 = years.filter(year => year );

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

1 Answer

Joseph Yhu
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Yhu
PHP Development Techdegree Graduate 48,637 Points

Simple, just add a condition on the right side of year => year that checks if the year is in the 20th century, i.e. checks if the year is 2000 or earlier.