Benchmark: Count string occurrence

Script Preparation code:

function regex(s, re) {
  var r = s.match(re);
  if (r) return r.length;
  return 0;
}

function split(s, oc) {
  return s.split(oc).length - 1;
}

function indexOf(s, oc) {
  var i = 0, count = 0;
  while ((i = s.indexOf(oc, i)) >= 0) {
    count++;
    i++;
  }
  return count;
}

Tests:

Use regex
window.result = regex("This is a pen", /is/g);
Use split
window.result = split("This is a pen", "is");
Use indexOf
window.result = indexOf("This is a pen", "is");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Use regex
Use split
Use indexOf

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0

Browser/OS: Firefox 146 on Linux

View result in a separate tab

Test name	Executions per second
Use regex	2597234.8 Ops/sec
Use split	2611738.5 Ops/sec
Use indexOf	2937491.8 Ops/sec

Related benchmarks:

Count string occurrence (version: 0)

http://stackoverflow.com/questions/4009756/how-to-count-string-occurrence-in-string http://stackoverflow.com/questions/881085/count-the-number-of-occurences-of-a-character-in-a-string-in-javascript

Comparing performance of: Use regex vs Use split vs Use indexOf

Created: 9 years ago by: Registered User

Jump to the latest result

Use regex

Use split

Use indexOf

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A