string concat vs array join

JavaScript performance comparison

Revision 51 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var words = ['this', 'is', 'a', 'test'];
  
  var text = words[0];
  
  var a = [words[0]];
  
  var i;
  
  var text2;
  
  for(i = 1; i < 10000; i++)
  {
      a.push(words[i]);
  }

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Concat
for(i = 1; i < 10000; i++)
{
    text += ' ' + words[i];
}
pending…
Join
text2 = a.join(' ');
pending…

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