JavaScript - object (3) (assignment)

JavaScript Replit - object (3) 중 Assignment 포스팅입니다.

Answer

const scores = {
  '생활속의회계': 'C',
  '논리적글쓰기': 'B',
  '독일문화의이해': 'B+',
  '기초수학': 'D+',
  '영어회화': 'C+',
  '인지발달심리학': 'A+',
}

const requiredClasses = ['영어회화', '기초수학', '공학수학', '컴퓨터과학개론'];

const scoresTable = {
  'A+': 4.5,
  'A': 4,
  'B+': 3.5,
  'B': 3,
  'C+': 2.5,
  'C': 2,
  'D+': 1.5,
  'D': 1,
  'F': 0,
}

// 1. ES5 function ver
const getExamResult = function (scores, requiredClasses) {
  const result = {};
  for (let key in scores) {
    const letterGrade = scores[key];
    result[key] = scoresTable[letterGrade];
    
    console.log(key);
    console.log(letterGrade);
    
    requiredClasses.forEach(function (el) {
      if (!scores[el]) {
        result[el] = 0;
      }
    });
  }
  
  return result;
}

console.log(getExamResult(scores, requiredClasses));

// 2. ES6 Arrow function ver
const getExamResult = (scores, requiredClasses) => {
  const result = {};
  for (let key in scores) {
    const letterGrade = scores[key]; // from A+ to F
    
    result[key] = scoresTable[letterGrade]; // 과목명 = 학점
    
    requiredClasses.forEach((el) => { // 배열 반복문. requiredClasses 요소 모두 출력
      if (!scores[el]) { // 만약 scores에 requiredClasses 요소가 없다면
        result[el] = 0; // result 객체에 requiredClasses 요소가 새로 추가되며 value 값은 0
      }
    });
  }
  
  return result;
}

console.log(getExamResult(scores, requiredClasses));