arr.join("") vs. String.prototype.concat.apply("", arr)

Benchmark created by Eric Heydenberk on August 21, 2011

Preparation HTML

<script>
  var bigArr = [];
  var smallArr = [];
  
  
  for (var i = 0; i < 100000; i++) {
    bigArr.push("a");
  }
  for (var i = 0; i < 10; i++) {
    smallArr.push("a");
  }
</script>

Test runner

var string = bigArr.join("");

var string = String.prototype.concat.apply("", bigArr);

var string = smallArr.join("");

var string = String.prototype.concat.apply("", smallArr);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published by Eric Heydenberk on August 21, 2011