Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
Chrome 110
Windows
Desktop
one year ago
Test name Executions per second
filter().map() 335.8 Ops/sec
flatMap() 100.3 Ops/sec
Script Preparation code:
x
 
var arr = [];
var i = 0;
while (i <= 1E5) arr[i] = i++;
Tests:
  • filter().map()

     
    arr.filter(x => x % 3).map(x => x/100)
  • flatMap()

     
    arr.flatMap(x => x % 3 ? x/100 : [])