Javascript array concat vs push (v16)

Revision 16 of this benchmark created by Giuseppe on

Description

1) var arr1=[1,2,3]; var arr2=[4,5,6]; arr1=arr1.concat(arr2);

2) var arr1=[1,2,3]; var arr2=[4,5,6]; arr1.push(arr1,arr2);

Setup

var arr1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
    var arr2 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]
    var arr3 = []

Test runner

Ready to run.

Testing in
TestOps/sec
concat
for (i = 10000; i > 0; i--) {
  arr1 = arr1.concat(i);
}
ready
push
for (i = 10000; i > 0; i--) {
  arr1.push(i);
}
ready

Revisions

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