如何在Javascript中对JSON文件进行搜索查询

// 假设有一个包含学生信息的JSON文件
var students = [
  { name: "张三", age: 20, grade: "A" },
  { name: "李四", age: 22, grade: "B" },
  { name: "王五", age: 21, grade: "A" },
  { name: "赵六", age: 23, grade: "C" }
];

// 定义一个搜索函数，根据年龄进行搜索
function searchStudentsByAge(age) {
  // 使用filter()方法进行搜索查询
  var result = students.filter(function(student) {
    return student.age === age;
  });

  return result;
}

// 调用搜索函数，搜索年龄为20的学生
var searchResult = searchStudentsByAge(20);

// 输出搜索结果
console.log(searchResult);