Run results for: Sum with for and reduce

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36

Browser: Chrome 75

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Sum with for	1154.9 Ops/sec
Sum with Reduce	40.1 Ops/sec

Script Preparation code:

var arr = [];

for(var i = 0; i<1000*1000;i++){arr.push(Math.random());}

function sumFor(arr){
  	let sum = 0;
	for(var i = 0;i<arr.length;i++){
		sum += arr[i];
	}
  return sum;
}

function sumReduce(arr){
	return arr.reduce((a,b)=>a+b,0);
}

Tests:

Sum with for
var x = sumFor(arr);
Sum with Reduce
var y = sumReduce(arr);

Run results for: Sum with for and reduce

Sum with for

Sum with Reduce