array join vs string connect

JavaScript performance comparison

Revision 28 of this test case created

Info

Added a test

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>
<script>
  var alphabet = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z";
  var alphatmp = [];

  for (i = 0; i < 200; i++)
  alphatmp.push(alphabet);

  var str_to_split = alphatmp.join(',');
  var myarray = str_to_split.split(',');
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
array join
 
var tmp = [];
for (i = 0; i < myarray.length; i++) {
  tmp.push(myarray[i]);
}

var output = tmp.join('');
 pending…
string connect
 
var output = '';
for (i = 0; i < myarray.length; i++) {
  output += myarray[i];
}
 pending…
while
 
var output = '';
var i = myarray.length;
while (i--) {
  output = myarray[i] + output;
}
 pending…
jquery
 
var output = '';

foreach(myarray, function(key, value) {
  $(output).append(value);
});
 pending…

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