Run results for: char index vs charAt() vs slice()

Run details:

User agent: Mozilla/5.0 (Linux; arm_64; Android 13; SM-A525F) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 YaBrowser/22.11.6.41.00 SA/3 Mobile Safari/537.36

Browser: Yandex Browser 22

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
character index	3486921.0 Ops/sec
charAt()	3483588.8 Ops/sec
slice()	3487421.0 Ops/sec

Script Preparation code:

var str = 'foo bar baz';
var noop = Function.prototype;

Tests:

character index
if (str[0] == 'f') noop();
charAt()
if (str.charAt(0) == 'f') noop();
slice()
if (str.slice(0, 1) == 'f') noop();

Run results for: char index vs charAt() vs slice()

Compare methods for testing string's beggining character.

character index

charAt()

slice()