Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36
Chrome 86
Windows
Desktop
4 years ago
Test name Executions per second
using plus operator 83016.4 Ops/sec
using concat function 71168.4 Ops/sec
using template literals 79266.7 Ops/sec
Script Preparation code:
AخA
 
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`;
    }