如何基于键值对过滤对象数组，筛选gender值为M/F的条目

原数组：

const students = [
  { name: "xxx", class: "10", gender: "M" },
  { name: "yyy", class: "9", gender: "M" },
  { name: "zzz", class: "10", gender: "F" },
  { name: "aaa", class: "8", gender: "M" },
  { name: "bbb", class: "7", gender: "F" },
  { name: "ccc", class: "6", gender: "M" },
];

可以用数组的filter()方法筛选符合条件的条目，直接判断gender是否为"M"或"F"：

const filteredStudents = students.filter(student => {
  return student.gender === "M" || student.gender === "F";
});

console.log(filteredStudents);

也可以用更简洁的写法，通过数组包含判断来实现：

const filteredStudents = students.filter(student => ["M", "F"].includes(student.gender));

执行后会得到所有gender字段值为"M"或"F"的对象条目。如果原数组中存在其他gender值的条目，会被自动过滤掉。

内容的提问来源于stack exchange，提问作者Ravi Shankar Kumar Venuthurupa