jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

String Concatenation

Benchmark created on February 8, 2024

Setup

const a = 'You lost', b = 'the game';

Test runner

Ready to run.

Testing in
Test		Ops/sec
Concat	`a.concat(' ', b);`	ready
Template Literal	`${a} ${b}`;	ready
Addition	`a + ' ' + b;`	ready
Indirect Concat	`''.concat(a, ' ').concat(b);`	ready
Triple Concat	`''.concat(a, ' ', b);`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published on February 8, 2024
Revision 2: published on February 8, 2024