Run results for: lodash.each vs Object.forEach

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.168 Safari/537.36 OPR/51.0.2830.40

Browser: Opera 51

Operating system: Windows

Device Platform: Other

Date tested: 2025 years ago

Test name	Executions per second
native	63942.9 Ops/sec
for loop	1228.8 Ops/sec

Script Preparation code:

// Populate the base array
var arr = [];
for (var i = 0; i < 1000; i++) {
  arr[i] = i;
}

function fn(a) {
  return a * 2 * 5;
}

​x
 
​// Populate the base arrayvar arr = [];for (var i = 0; i < 1000; i++) {  arr[i] = i;}​function fn(a) {  return a * 2 * 5;}​      ​

Tests:

native
arr.forEach(fn);
arr.forEach(fn);
for loop
for(i = 0; i < arr.length; i++) { fn(arr[i]); }
for(i = 0; i < arr.length; i++) {
fn(arr[i]);
}