Replace All vs Split/Join

JavaScript performance comparison

Revision 38 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var str = "Test abc test test abc test...",
      REGEX = /abc/g;
  var strs = ["Test abc test test abc test...", "...Test abc test test abc test"];
  var i = 0;
  var result;

};

Benchmark.prototype.teardown = function() {
  window.LEAK = result;

};
</script>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
split & join
str.split("abc").join("");
pending…
replace
str.replace(REGEX, '');
pending…
replace (prevent DCE & LICM)
result = strs[i = ((i + 1) & 1)].replace(REGEX, '');
pending…
split & join (prevent DCE&LICM)
result = strs[i = ((i + 1) & 1)].split("abc").join("");
pending…

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Revisions

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