Benchmark: Javascript 'concat()' vs '+'

Script Preparation code:

var string1 = "Hello ";
var string2 = " world!";

Tests:

concat()
var message = string1.concat(string2);
plus_operator
var message = string1 + string2;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
concat()
plus_operator

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: 19 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 OPR/107.0.0.0 (Edition Yx GX)

Browser/OS: Opera 107 on Windows

View result in a separate tab

Test name	Executions per second
concat()	13923680.0 Ops/sec
plus_operator	13825040.0 Ops/sec

Javascript 'concat()' vs '+' (version: 0)

Testing the performance difference between concat() and the + operator for strings in javascript

Comparing performance of: concat() vs plus_operator

Created: one year ago by: Guest

Jump to the latest result

concat()

plus_operator

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A