Run results for: array for vs foreach

Run details:

User agent: Mozilla/5.0 (Linux; Android 5.1.1; Lenovo A6020a40 Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.137 Mobile Safari/537.36

Browser: Chrome Mobile 64

Operating system: Android 5.1.1

Device Platform: Lenovo A6020a40

Date tested: 6 years ago

Test name	Executions per second
array foreach	195413.6 Ops/sec
For	101452.5 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:

var a = ['hello', 'a', 'bc', '5', '6','7'];

Tests:

array foreach
var b=''; a.forEach(c => b+=c)
For
var b =''; for (var i =0,n=a.length; i<n;i++) b+=a[i];

Run results for: array for vs foreach

Compare the new ES6 spread operator with the traditional concat() method

array foreach

For