Run results for: Comare ^Regex vs startsWith, .search vs .indexOf, .test vs .include (spelled correctly)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36

Browser: Chrome 95

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
^test Regex	418.4 Ops/sec
.startsWith	500.2 Ops/sec
.search(RegExp)	257.6 Ops/sec
.indexOf	7239.9 Ops/sec
RegExp # test	295.9 Ops/sec
.includes	319.9 Ops/sec

HTML Preparation code:

<div></div>

Script Preparation code:

window.matchStartRegex = /^test/;
window.matchRegex = /test/;
window.matchSubstr = 'test';
var data = window.data = [];
const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
var TOTAL_STRINGS = window.TOTAL_STRINGS = 100000;

function getRandomInt(max) {
  return Math.floor(Math.random() * max);
}

function makeRandomString(len) {
  var text = "";
  for( var i=0; i < len; i++ ) {
    text += possible.charAt(getRandomInt(possible.length));
  }
  return text;
}

while (data.length < TOTAL_STRINGS) {
  data.push(makeRandomString(getRandomInt(20)));
}

Tests:

^test Regex
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var regex = window.matchStartRegex; let result = false; while (x < TOTAL_STRINGS) { const str = data[x]; result = regex.test(str); x += 1; }
.startsWith
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var match = window.matchSubstr; let result = false; while (x < TOTAL_STRINGS) { const str = data[x]; result = str.startsWith(match); x += 1; }
.search(RegExp)
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var regex = window.matchRegex; let result = false; while (x < TOTAL_STRINGS) { const str = data[x]; result = str.search(regex); x += 1; }
.indexOf
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var match = window.matchSubstr; let result = -1; while (x < TOTAL_STRINGS) { const str = data[x]; result = str.indexOf(match); x += 1; }
RegExp # test
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var regex = window.matchRegex; let result = false; while (x < TOTAL_STRINGS) { const str = data[x]; result = regex.test(str); x += 1; }
.includes
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var match = window.matchSubstr; let result = false; while (x < TOTAL_STRINGS) { const str = data[x]; result = str.includes(match); x += 1; }

Run results for: Comare ^Regex vs startsWith, .search vs .indexOf, .test vs .include (spelled correctly)

Testing some things

^test Regex

.startsWith

.search(RegExp)

.indexOf

RegExp # test

.includes