Run results for: String Concatenation with a predefined String Array set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

concat (w/ spread operator)

2.5M/s

concat using for loop

179K/s

View exact numbers

Test name	Executions per second
✓ concat (w/ spread operator)	2,484,602 Ops/sec
concat using for loop	179,279 Ops/sec

Script Preparation code:

var arr = Array(100).fill('A');
var str = "";

Tests: