Run results for: string += vs array joining vs template strings [v2]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.142 Safari/537.36

Browser: Chrome 81

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var str, strarr
var chars = 'abcdefghijklmnoprstuwxyz'

Tests:

+=
str = '' while (str.length < 100) str += chars[ Math.floor( Math.random() * chars.length ) ]
array joining
strarr = [] while (strarr.length < 100) strarr.push(chars[ Math.floor( Math.random() * chars.length ) ]) str = strarr.join('')
template strings
str = '' while (str.length < 100) str = `${str}${chars[ Math.floor( Math.random() * chars.length ) ]}`