Js performs array de-duplication based on an attribute in an array object

usereduceThe array_object () method is used to decrement an array object

function unique(uniqueArr) {
  var has = {};
  return uniqueArr.reduce(function (arr, item) {
    !has[item.id] && (has[item.id] = true && arr.push(item));
    returnarr; } []); }var arr = [
  {
    id: 'P001'.name: 1}, {id: 'P002'.name: 2}, {id: 'P001'.name: 1,},];Call * / / *
console.log(unique(arr))
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