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school.js
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school.js
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// addStudent: Adds a student by creating a new student and adding the student to a collection of students. The method adds a constraint that the year can only be any of the following values: '1st', '2nd', '3rd', '4th', or '5th'. Returns a student object if year is valid otherwise it logs "Invalid Year".
// enrollStudent: Enrolls a student in a course.
// addGrade: Adds the grade of a student for a course.
// getReportCard: Logs the grades of a student for all courses. If the course has no grade, it uses "In progress" as the grade.
// courseReport: Logs the grades of all students for a given course name. Only student with grades are part of the course report.
function createSchool() {
return {
students: [],
addStudent(studentObj) {
if (this.isValidStudent(studentObj.year)) {
this.students.push(studentObj);
}
},
isValidStudent(year) {
return /(1st|2nd|3rd|4th|5th)/.test(year);
},
isEnrolledStudent(studentObj) {
return this.students.includes(studentObj);
},
studentEnrollError() {
console.log("that is not an enrolled student.");
},
enrollStudent(studentObj, courseObj) {
if (this.isEnrolledStudent(studentObj)) {
studentObj.addCourse(courseObj);
} else {
this.studentEnrollError();
}
},
addGrade(studentObj, courseCode, grade) {
if (this.isEnrolledStudent(studentObj)) {
studentObj.findCourse(courseCode).grade = grade;
} else {
this.studentEnrollError();
}
},
getReportCard(studentObj) {
studentObj.courses.forEach(course => {
let grade = course.grade ? course.grade : "In Progress";
console.log(course.name + ": " + grade);
});
},
courseReport(courseName) {
console.log(`=${courseName} Grades=`);
let total = 0;
let numStudents = 0;
this.students.forEach(student => {
student.courses.forEach(course => {
if (course.name === courseName && course.grade) {
console.log(student.name + ": " + course.grade);
total += course.grade;
numStudents += 1;
}
});
});
if (numStudents > 0) {
console.log("---", `Course Average: ${total / numStudents}`);
} else {
console.log(undefined);
}
}
};
}
function createStudent(name, year) {
let student = {};
student.name = name;
student.year = year;
student.courses = [];
student.info = function () {
console.log(this.name + " is a " + this.year + " year student.");
};
student.addCourse = function (courseObj) {
this.courses.push(courseObj);
};
student.listCourses = function () {
// this.courses.forEach(course => console.log(course));
console.log(this.courses);
};
student.findCourse = function (code) {
return this.courses.find(course => course.code === code);
}
student.addNote = function (code, note) {
let course = this.findCourse(code);
if (course.note) {
course.note += " " + note;
} else {
course.note = note;
}
};
student.updateNote = function (code, note) {
let course = this.findCourse(code);
course.note = note;
};
student.viewNotes = function () {
this.courses.forEach(course => {
if (course.note) console.log(course.name + ": " + course.note + ";");
});
};
return student;
}
let school = createSchool();
let foo = createStudent('foo', '3rd');
let bar = createStudent('bar', '1st');
let qux = createStudent('qux', '2nd');
school.addStudent(foo);
school.addStudent(bar);
school.addStudent(qux);
school.enrollStudent(foo, { name: 'Math', code: 101, grade: 95, });
school.enrollStudent(foo, { name: 'Advanced Math', code: 102, grade: 90, });
school.enrollStudent(foo, { name: 'Physics', code: 202, });
school.enrollStudent(bar, { name: 'Math', code: 101, grade: 91, });
school.enrollStudent(qux, { name: 'Math', code: 101, grade: 93, });
school.enrollStudent(qux, { name: 'Advanced Math', code: 102, grade: 90, });
school.getReportCard(foo);
// = Math: 95
// = Advanced Math: 90
// = Physics: In progress
school.courseReport('Math');
// = =Math Grades=
// = foo: 95
// = bar: 91
// = qux: 93
// = ---
// = Course Average: 93
school.courseReport('Advanced Math');
// = =Advanced Math Grades=
// = foo: 90
// = qux: 90
// = ---
// = Course Average: 90
school.courseReport('Physics');
// = undefined