Run results for: Native JS: Array.join strings (prepared) vs template literals vs String.concat

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Benchmark engine: Benchmark.js

native concat

32.3M/s

using template literals

161K/s

concat

109K/s

join

87K/s

View exact numbers

Script Preparation code:

var name = "name";
var id = "id";
var arr = ["", ':', 0, ', ', "", ':', 'name', 0]

Tests:

join
for (let i = 0; i < 80; ++i) { arr[0] = id; arr[2] = arr[7] = i; arr[4] = name; let result = arr.join(); }
concat
for (let i = 0; i < 80; ++i) { let result = "".concat(id, ':', i, ', ', name, ':', 'name', i); }
using template literals
for (let i = 0; i < 80; ++i) { let result = `${id}:${i}, ${name}:name${i}`; }
native concat
for (let i = 0; i < 80; ++i) { let result = id + ':'+ i.toString() + ', '+':' +'name'+ i.toString(); }