Slice vs Substr vs Substring vs [ ] Methods (v58)

Revision 58 of this benchmark created by mike2 on

Description

This is comparing the runtimes of [ ], substr, substring, and slice in a string for large (10000 character) string size.

Preparation HTML

<script>
  var longString = "";
  // Large = 10,000
  for (var i = 0; i < 10000; i++) {
        longString += i % 10;
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Substring (long)
for (i = 0; i < longString.length; i+=2) {
  var kt=longString.substring(i, i+2);
}
ready
Slice (long)
for (i = 0; i < longString.length; i+=2) {
  var kt=longString.slice(i, i + 2);
}
ready
Substr (long)
for (i = 0; i < longString.length; i+=2) {
  var kt=longString.substr(i, 2);
}
ready
[ ] (long)
for (i = 0; i < longString.length; i+=2) {
  var kt=longString[i]+longString[i+1];
}
ready
charAt (long)
for (i = 0; i < longString.length; i+=2) {
  var kt=longString.charAt(i)+longString.charAt(i+1);
}
ready

Revisions

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