Run results for: Native JS: concatenate string with + vs template literals vs String.concat vs array join

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser: Chrome 142

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

using plus operator

135K/s

using template literals

131K/s

using concat function

100K/s

using join

75K/s

View exact numbers

Script Preparation code:

var name = "name";
var id = "id";

Tests:

using plus operator
for (let i = 0; i < 80; ++i) { let result = id + ": 1, " + name + ": someItem"; }
using concat function
for (let i = 0; i < 80; ++i) { let result = "".concat(id, ": 1, ", name, ": someItem"); }
using template literals
for (let i = 0; i < 80; ++i) { let result = `${id}: 1, ${name}: someItem`; }
using join
for (let i = 0; i < 80; ++i) { let result = [id, ": 1, ", name, ": someItem"].join(''); }