Concatenation vs Array Join (v15)

Revision 15 of this benchmark created on

Preparation HTML

<script>
  var str, str1, i, j;
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
Concatenation
for (i = 0; i < 10000; i++) {
  str += 'a';
}
ready
Array.prototype.join
var tmp = [];
for (j = 0; j < 10000; j++) {
  tmp.push('a');
}
str2 = tmp.join('');
ready
Array
var i = 10000;
do {
  str += 'a';
} while (i--);
ready

Revisions

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