Typescript按多个值筛选

const numbers = [5, 10, 15, 20];
const filteredNumbers = numbers.filter(num => num > 10);
console.log(filteredNumbers); // 输出 [15, 20]

interface Student {
  name: string;
  age: number;
  score: number;
}

const students: Student[] = [
  { name: "Alice", age: 20, score: 80 },
  { name: "Bob", age: 19, score: 90 },
  { name: "Charlie", age: 18, score: 70 },
  { name: "David", age: 21, score: 85 }
];

const filteredStudents = students.reduce((result, student) => {
  if (student.age > 18) {
    result.push(student);
  }
  return result;
}, []);

const averageScore = filteredStudents.reduce((sum, student) => sum + student.score, 0) / filteredStudents.length;

console.log(filteredStudents); // 输出 [{ name: "Alice", age: 20, score: 80 }, { name: "David", age: 21, score: 85 }]
console.log(averageScore); // 输出 82.5

interface User {
  name: string;
  age: number;
  type: string;
}

const users: User[] = [
  { name: "Alice", age: 20, type: "admin" },
  { name: "Bob", age: 19, type: "user" },
  { name: "Charlie", age: 18, type: "admin" },
  { name: "David", age: 21, type: "user" }
];

const filteredUsers = users.filter(user => user.type === "admin");

console.log(filteredUsers); // 输出 [{ name: "Alice", age: 20, type: "admin" }, { name: "Charlie", age: 18, type: "admin" }]