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,
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2 Answers
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);3 Comments
Marvix
Great, thanks, but what if the elements are number, and I need to add array1 to array2?
Nina Scholz
it should work with numbers, too. what do you mean with "add array1 to array2"?
Marvix
yes,
result = array1.map((v, i) => parseInt(v) * parseInt( array2[(i) % array2.length] ));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);