// 对象的基本操作 const student = { name: "张三", age: 20, grade: "大二" }; student.major = "计算机"; // 添加新属性 console.log("学生信息:", student); console.log(`姓名: ${student.name}`); console.log(`所有键: ${Ob
// 对象的基本操作 const student = { name: "张三", age: 20, grade: "大二" }; student.major = "计算机"; // 添加新属性 console.log("学生信息:", student); console.log(`姓名: ${student.name}`); console.log(`所有键: ${Ob