Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36
Chrome 62
Windows
Other
2025 years ago
Test name Executions per second
while (array.length > 0) { array.pop(); } 7517485.0 Ops/sec
while (array.pop()) {} 7453645.0 Ops/sec
array.length = 0; 4427535.0 Ops/sec
array = []; 5202379.5 Ops/sec
Script Preparation code:
x
 
var array = [];
for(var i = 0; i < 100000; i++){array.push(Math.random());}
Tests:
  • while (array.length > 0) { array.pop(); }

     
    while (array.length > 0) { array.pop(); }
  • while (array.pop()) {}

     
    while (array.pop()) {}
  • array.length = 0;

     
    array.length = 0;
  • array = [];

     
    array = [];