How to join elements of two different size arrays in javascript?

Question

Would I like to create a new array from the following:

Let array1 = [a,b,c,d]
let array2 = [x, y]

How to get new array like this [ay,bx,cy,dx]?

Thanks,

Answer 1

You could take the index with an offset and the remainder of the length of the second array.

 let array1 = ['a','b','c','d'], array2 = ['x', 'y'], result = array1.map((v, i) => v + array2[(i + 1) % array2.length]); console.log(result);

Answer 2

You can use the modulus operator to get the correct second array elements:

 let array1 = ['a','b','c','d']; let array2 = ['x', 'y']; let result = array1.map( (item, i) => { return item + array2[(i+1) % 2] } ); console.log(result);