How to insert a new element in between all elements of a JS array?

Question

I have an array [a, b, c]. I want to be able to insert a value between each elements of this array like that: [0, a, 0, b, 0, c, 0].

I gues

Answer 1

You can try with the below code. It will add 0 in middle of each two element of the array

console.log(['a', 'b', 'c'].reduce((r, a) => r.concat(a,0), [0]).slice(1, -1))