How to merge/concat two arrays together in JS?

JavaScript: How to merge/concat two arrays together in JS?

To merge two arrays together in Javascript, use the .concat([]) method.

  1. let first_array = [1,2,3,4,5];
  2. let second_array = ["a","b","c"];
  3.  
  4. console.log(first_array.concat(second_array));

(8) [1, 2, 3, 4, 5, "a", "b", "c"]
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