Run results for: charCodeAt vs charAt

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Safari/605.1.15

Browser: Safari 15

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

charCodeAt

146K/s

use []

144K/s

charAt

144K/s

View exact numbers

Script Preparation code:

var a = "abcdefghijklmnopqrstuvwxyz"
var b = "x"
var c = b.charCodeAt(0)

Tests:

charAt
for(let i = 0; i < a.length; ++i) { if(a.charAt(i) == b) break; }
charCodeAt
for(let i = 0; i < a.length; ++i) { if(a.charCodeAt(i) == c) break; }
use []
for(let i = 0; i < a.length; ++i) { if(a[i] == b) break; }