Slice vs Substr vs Substring vs [ ] Methods

JavaScript performance comparison

Revision 97 of this test case created by

Preparation code

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

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Substring (long)
for (i = 0; i < longString.length; i++) {
  longString.substring(i, i + 4);
}
pending…
Slice (long)
for (i = 0; i < longString.length; i++) {
  longString.slice(i, i + 4);
}
pending…
Substr (long)
for (i = 0; i < longString.length; i++) {
  longString.substr(i, 4);
}
pending…
[ ] (long)
for (i = 0; i < longString.length; i++) {
  for (j = 0; j < 3; j++) {
    longString[i + j];
  }
}
pending…
charAt (long)
for (i = 0; i < longString.length; i++) {
  for (j = 0; j < 3; j++) {
    longString.charAt(i + j);
  }
}
pending…

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