Run results for: Count string period occurrence

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

forloop2

11.1M/s

Use regex

8.8M/s

Use split with regex

7.7M/s

Use forloopset

2.3M/s

View exact numbers

Test name	Executions per second
✓ forloop2	11,083,674 Ops/sec
Use regex	8,797,397 Ops/sec
Use split with regex	7,699,240 Ops/sec
Use forloopset	2,251,794 Ops/sec

Script Preparation code:

function regex(s) {
  var r = s.match(/[.．｡。]/g);
  if (r) return r.length;
  return 0;
}

function split(s) {
  return s.split(/[.．｡。]/).length - 1;
}

function forloopset(s, oc) {
  let c = 0;
  for (let i =0; i < s.length; i++){
  if (oc.has(s[i])) c++}
  return c;
}
 
function forloop(s) {
  let c = 0;
  for (let i =0; i < s.length; i++){
  if (s[i] ==="."|| s[i] === "．"|| s[i] === "｡"|| s[i] === "。") c++}
  return c;
}

Tests:

Use regex
regex("This is a pen. This is a pen｡ Another one.");
Use split with regex
split("This is a pen. This is a pen｡ Another one.");
Use forloopset
forloopset("This is a pen. This is a pen｡ Another one.", new Set([".","．","｡","。"]));
forloop2
forloop("This is a pen. This is a pen｡ Another one.");