Benchmark: indexOf vs regex multiple cases

HTML Preparation code:

<div></div>

Script Preparation code:

window.regex = /PERCENT|VARIANCE|TARGET/;
window.match = 'test';
var data = window.data = [];
const possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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:

regex
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; var regex = window.regex; while (x < TOTAL_STRINGS) { const str = data[x]; regex.test(str); x += 1; }
indexof many
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; while (x < TOTAL_STRINGS) { const str = data[x]; str.indexOf('TARGET') !== -1 || str.indexOf('VARIANCE') !== -1 || str.indexOf('PERCENT') !== -1 ; x += 1; }
indexof single
var x = 0; var TOTAL_STRINGS = window.TOTAL_STRINGS; var data = window.data; while (x < TOTAL_STRINGS) { const str = data[x]; str.indexOf('TARGET') !== -1 ; x += 1; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regex
indexof many
indexof single

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: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36

Browser/OS: Chrome 91 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
regex	257.5 Ops/sec
indexof many	245.8 Ops/sec
indexof single	6841.5 Ops/sec

indexOf vs regex multiple cases (version: 0)

Comparing performance of: regex vs indexof many vs indexof single

Created: 2 years ago by: Guest

Jump to the latest result

regex

indexof many

indexof single

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A