Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 15_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.3 Mobile/15E148 Safari/604.1
Mobile Safari 15
iOS 15.3.1
Mobile
2 years ago
Test name Executions per second
reduce 258.3 Ops/sec
loop 7.6 Ops/sec
loop2 7.7 Ops/sec
Script Preparation code:
AخA
 
t=new Array(500000);
for (let i=0;i<t.length;i++) {t[i]=Math.random();}
Tests:
  • reduce

     
    t.reduce((p,c) => p+c, 0);
  • loop

    x
     
    (() => {
      let i=0, res = 0;
    for (;i<t.length;i++) res += t[i];
    return res;})();
  • loop2

     
    (() => {
    var i, res;
    for (i=res=0;i<t.length;i++) res += t[i];
    return res;})();