Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36
Chrome 88
Windows
Desktop
4 years ago
Test name Executions per second
Object.prototype.hasOwnProperty 3085886.8 Ops/sec
obj.hasOwnProperty 6538540.5 Ops/sec
null check 3349970.5 Ops/sec
null check function 3325065.8 Ops/sec
Script Preparation code:
AخA
 
window.obj = { a: 2 }
Tests:
  • Object.prototype.hasOwnProperty

     
    Object.prototype.hasOwnProperty.call(obj, 'a');
  • obj.hasOwnProperty

     
    obj.hasOwnProperty('a');
  • null check

     
    obj.hasOwnProperty && obj.hasOwnProperty('a');
  • null check function

     
    typeof obj.hasOwnProperty === 'function' && obj.hasOwnProperty('a');