Answers for "concat ignore duplicates"

1

concat without dublicate item

var a = [1, 2, 3], b = [101, 2, 1, 10]
var c = a.concat(b.filter((item) => a.indexOf(item) < 0))
Posted by: Guest on July-01-2021
0

concat ignore duplicates

ResultArray = record.concat(ResultArray.filter((item) => a.indexOf(item) < 0));
//ResultArray (Array)
[
  { location_name: 'Fresno', location_id: 1001 },
  { location_name: 'New York', location_id: 1002 },
  { location_name: 'Fresno', location_id: 1001 },
  { location_name: 'New York', location_id: 1002 }
]
Posted by: Guest on February-13-2022

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