Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36
Chrome 76
Linux
Desktop
5 years ago
Test name Executions per second
!!x 4484756.5 Ops/sec
x 4529322.0 Ops/sec
Script Preparation code:
AخA
 
x = false;
Tests:
  • !!x

     
    return !!x;
  • x

     
    return x;
  • x === false

     
    return x === false;
  • booooo

     
    return x == false;