Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36
Chrome 81
Linux
Desktop
2 years ago
Test name Executions per second
Test1 11444899.0 Ops/sec
Test2 3766253.0 Ops/sec
Script Preparation code:
AخA
 
var newArr = ['1', '2', '3', '4'];
Tests:
  • Test1

     
    !!newArr.length
  • Test2

     
    Boolean(newArr.length)