var a=[
[
1
2
3
], [
4
5
6
]
];
var b= [
[78910],
[11121314],
[15161718],
[19202122]
];
concatenate each element in array a (1p2p3, etc.) with each array element in b ([7pcjcm9], [11p12pr 13p14], etc.) to produce a new array
c=[
[[1],[78910]],
[[2],[11121314]],
[[3],[15161718]],
[[4],[19202122]]
]
and a remaining d = [[5jue 6]] , how to write code?
inspired by other respondents:
var _a = a.flat();
var c = b.map((v,k) => [[_a[k]],v])
var d = [_a.splice(b.length)]
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