Merge multiple arrays based on their index using javascript

Question

I need to merge two arrays into a single array. I have code but it is not working as expected-- it is merging them one after another, but I need to interlock the values.

Answer 1

You can use a combination of reduce and concat (source):

var array1 = [1, 2, 3, 4];
var array2 = ["a", "b", "c", "d"];
var newArray = array1.reduce(function(prev, curr) {
  return prev.concat(curr, array2[prev.length / 2]);
}, []);
$("#result").html(newArray);