防止数组添加重复对象

const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = Array.from(new Set(arr));
console.log(uniqueArr);

const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = arr.filter((obj, index, self) => {
  return index === self.findIndex((o) => (
    o.id === obj.id && o.name === obj.name
  ));
});
console.log(uniqueArr);

const arr = [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}, {id: 1, name: 'Alice'}];
const uniqueArr = arr.reduce((acc, obj) => {
  const isExist = acc.some((o) => o.id === obj.id && o.name === obj.name);
  if (!isExist) {
    acc.push(obj);
  }
  return acc;
}, []);
console.log(uniqueArr);