Run results for: regex vs filter 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

regex

5.4M/s

filter

4.4M/s

View exact numbers

Test name	Executions per second
✓ regex	5,395,930 Ops/sec
filter	4,437,522 Ops/sec

Script Preparation code:

function removeCharFrom1(str, char) {
  const regex = new RegExp(`${char}`, "gi");
  return str.replace(regex, "");
}

function removeCharFrom2(str, char) {
  return str
    .split("")
    .filter((c) => c != char.toLowerCase() && c != char.toUpperCase())
    .join("");
}

Tests:

regex
removeCharFrom1("ElddzeroD WebDD ddSchool", "d");
filter
removeCharFrom2("ElddzeroD WebDD ddSchool", "d");