Run results for: For Each comparison

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Windows 7

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
lodash forEach	46.3 Ops/sec
Array.prototype.forEach()	48.8 Ops/sec
Traditional for loop	22.6 Ops/sec
Custom Array.prototype.forEach()	49.0 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.2/lodash.min.js'></script>

Script Preparation code:

var count = 100000
var myArray = [];

for (var i = 0; i < count; i++) { myArray.push(Math.random() * 5) }

Array.prototype.forEach2=function(a){
    var l=this.length;
    for(var i=0;i<l;i++)a(this[i],i)
}

Tests:

lodash forEach
_.forEach(myArray, (value, index) => { myArray[index] = value + 1; });
Array.prototype.forEach()
myArray.forEach((value, index) => { myArray[index] = value + 1; });
Traditional for loop
for (var index = 0; index < myArray.length; index++) { myArray[index] = myArray[index] + 1; }
Custom Array.prototype.forEach()
myArray.forEach2((value, index) => { myArray[index] = value + 1; });

Run results for: For Each comparison

lodash forEach

Array.prototype.forEach()

Traditional for loop

Custom Array.prototype.forEach()