Test case details

Preparation Code

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 cases

Test #1

for (i = 10000; i > 0; i--) {   arr3 = arr1.concat(arr2); }

Test #2

for (i = 10000; i > 0; i--) {   arr1.push.apply(arr1, arr2); }