<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script>
  //unmodified array
  var baseArray = ["Napoleon"];
  
  //modified arrays
  var catArray = merArray = pushArray = [];
  
  //cache concat prototype for best performance
  var concat = Array.prototype.concat;
</script>

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *catArray = catArray.concat(baseArray);

Test #2

Title *

Async

Code *$.merge(merArray, baseArray);

Test #3

Title *

Async

Code *

for(elem in baseArray)
{
  pushArray.push(elem);
}

Test case details

Preparation Code

Test cases

Test #1

Test #2

Test #3