[removed] how to map array and split string content to new cell

Question

Which code should I use on js to map an array with spliting cells yet not reapeating [\"12,3\",\"3\",\"5\",\"66,22\"] into [\"12\",\"3\",\"5\",\"66\",\"22\"]<

Answer 1

I believe that you miss one 3 element in your desired output, if so - try following solution:

var arr = ["12,3","3","5","66,22"],
    res = [].concat(...arr.map(v => v.split(',')));
    
    console.log(res);