JavaScript method to merge and sort two arrays

Took 1 minutes 56 seconds to code JavaScript method to first merge two arrays and then return the sorted array. Here is the code snippet.

Code:

arr1 = [1, 5, 6, 2];

arr2 = [2, 8, 6, 5];

function merge(arr1, arr2) {

for (var i = 0; i < arr2.length; i++) {

arr1.push(arr2[i]);

}

}

merge(arr1, arr2); //changes arr1 unlike JavaScript concat() method

function sort(arr) {

for (var i = 0; i < arr.length; i++) {

for (var y = i + 1; y < arr.length; y++) {

if (arr[i] > arr[y]) {

k = arr[i];

arr[i] = arr[y];

arr[y] = k;

}

}

}

return arr;

}

document.write(sort(arr1));

Result:

1,2,2,5,5,6,6,8