Remove unique duplicate in multiple array and sum them Javascript

Question

I have data like this:

var data1 = ["RFCC","HCC","RFCC"];
var data2 = [1,1,1];

I want to remove unique duplicate and sum the number based on removed unique, so the result should be like this:

var data1 = ["RFCC","HCC"];
var data2 = [2,1];

If possible, maybe someone could help me? Thanks in advance.

score 0 · Accepted Answer · answered Nov 15 '18 at 06:06

var data1 = ['a', 'b', 'c', 'a', 'b']
var data2 = [];
data1 = data1.filter((item, i)=>{
 var _i = data1.indexOf(item);
 if( _i === i){
  data2.push(1);
  return true;
 } else {
  data2[_i] = data2[_i] + 1;
  return false;
 }
})

console.log(data1, data2);

Remove unique duplicate in multiple array and sum them Javascript

1 Answers1