68. Finishing Touches

• vue cli start 링크

npm create vue@latest

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• 프로젝트 링크

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이 강의에서는 퀴즈 애플리케이션의 마무리 단계로, 퀴즈 결과를 계산하고 사용자가 퀴즈를 완료한 후 결과 화면으로 전환하는 과정을 다룹니다.
사용자가 선택한 정답의 정확성을 확인하고, 사용자의 점수를 추적하여 적절한 결과를 표시하는 방법을 배웁니다.
또한, 퀴즈를 재시작할 수 있는 리셋 버튼의 기능을 추가합니다.
이 과정에서는 앞서 배운 컴포넌트 분리, 데이터 전달, 애니메이션 적용 등의 기술을 종합적으로 활용하여 사용자에게 매끄러운 인터랙션 경험을 제공하는 것이 목표입니다.

src/main.ts

import './assets/main.css'
import { createApp } from 'vue'
import App from './App.vue'

createApp(App).mount('#app')

src/App.vue

<script setup lang="ts">
  import {ref} from "vue";
  import Questions from "@/components/Questions.vue";
  import Result from "@/components/Result.vue";

  const questionsAnswered = ref(0);

  const totalCorrect = ref(0);

  const questions = ref([
    {
      q: 'What is 2 + 2?',
      answers: [
        {
          text: '4',
          is_correct: true
        },
        {
          text: '3',
          is_correct: false
        },
        {
          text: 'Fish',
          is_correct: false
        },
        {
          text: '5',
          is_correct: false
        }
      ]
    },
    {
      q: 'How many letters are in the word "Banana"?',
      answers: [
        {
          text: '5',
          is_correct: false
        },
        {
          text: '7',
          is_correct: false
        },
        {
          text: '6',
          is_correct: true
        },
        {
          text: '12',
          is_correct: false
        }
      ]
    },
    {
      q: 'Find the missing letter: C_ke',
      answers: [
        {
          text: 'e',
          is_correct: false
        },
        {
          text: 'a',
          is_correct: true
        },
        {
          text: 'i',
          is_correct: false
        }
      ]
    },
  ])

  const results = ref([
    {
      min: 0,
      max: 2,
      title: "Try again!",
      desc: "Do a little more studying and you may succeed!"
    },
    {
      min: 3,
      max: 3,
      title: "Wow, you're a genius!",
      desc: "Studying has definitely paid off for you!"
    }
  ])

  const questionAnswered = (is_correct: boolean) => {
    if (is_correct) {
      totalCorrect.value++;
    }

    questionsAnswered.value++;
  }

  const reset = () => {
    questionsAnswered.value = 0;
    totalCorrect.value = 0;
  }
</script>

<template>
  <div class="ctr">
    <Transition name="fade" mode="out-in">
      <Questions
          v-if="questionsAnswered < questions.length"
          :questions="questions"
          :questionsAnswered="questionsAnswered"
          @question-answered="questionAnswered"
      />
      <Result v-else
              :results="results"
              :totalCorrect="totalCorrect"
      />
    </Transition>

    <button
        v-if="questionsAnswered === questions.length"
        type="button"
        class="reset-btn"
        @click.prevent="reset"
    >Reset</button>
  </div>
</template>

src/components/Questions.vue

<script setup lang="ts">
  const props = withDefaults(
      defineProps<{
        questions: Array<{
          q: string
          answers: Array<{
            text: string
            is_correct: boolean
          }>
        }>
        questionsAnswered: number
      }>(),
      {}
  )

  const emits = defineEmits(['question-answered'])

  const selectAnswer = (is_correct: boolean) => {
    emits('question-answered', is_correct)
  }
</script>

<template>
  <div class="questions-ctr">
    <div class="progress">
      <div class="bar" :style="{width: `${questionsAnswered / questions.length * 100}%`}"></div>
      <div class="status">
        {{ questionsAnswered }} out of {{ questions.length }} questions answered
      </div>
    </div>
    <TransitionGroup name="fade">
      <div
          class="single-question"
          v-for="(question, qi) in questions"
          :key="question.q"
          v-show="questionsAnswered === qi"
      >
        <div class="question">{{ question.q }}</div>
        <div class="answers">
          <div
              class="answer"
              v-for="answer in question.answers"
              :key="answer.text"
              @click.prevent="selectAnswer(answer.is_correct)"
          >
            {{ answer.text }}
          </div>
        </div>
      </div>
    </TransitionGroup>
  </div>
</template>

<style scoped>

</style>

src/components/Result.vue

<script setup lang="ts">
  import {computed} from "vue";

  const props = withDefaults(
      defineProps<{
        results: Array<{
          min: number
          max: number
          title: string
          desc: string
        }>
        totalCorrect: number
      }>(),
      {}
  )

  const resultIndex = computed(() => {
    let index = 0;
    props.results.forEach((e, i) => {
      if (e.min <= props.totalCorrect && e.max >= props.totalCorrect) {
        index = 1;
      }
    })
    return index;
  })
</script>

<template>
  <div class="result">
    <div class="title">{{ results[resultIndex].title }}</div>
    <div class="desc">
      {{ results[resultIndex].desc }}
    </div>
  </div>
</template>

<style scoped>

</style>

src/assets/main.css

* {
    box-sizing: border-box;
}
body {
    font-size: 20px;
    font-family: sans-serif;
    padding-top: 20px;
    background: #e6ecf1;
}

.ctr {
    margin: 0 auto;
    max-width: 600px;
    width: 100%;
    box-sizing: border-box;
    position: relative;
}
.questions-ctr {
    position: relative;
    width: 100%;
}
.question {
    width: 100%;
    padding: 20px;
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    background-color: #00ca8c;
    color: #fff;
    box-sizing: border-box;
}
.single-question {
    position: relative;
    width: 100%;
}
.answer {
    border: 1px solid #8e959f;
    padding: 20px;
    font-size: 18px;
    width: 100%;
    background-color: #fff;
    transition: 0.2s linear all;
}
.answer span {
    display: inline-block;
    margin-left: 5px;
    font-size: 0.75em;
    font-style: italic;
}
.progress {
    height: 50px;
    margin-top: 10px;
    background-color: #ddd;
    position: relative;
}
.bar {
    height: 50px;
    background-color: #ff6372;
    transition: all 0.3s linear;
}
.status {
    position: absolute;
    top: 15px;
    left: 0;
    text-align: center;
    color: #fff;
    width: 100%;
}
.answer:not(.is-answered) {
    cursor: pointer;
}
.answer:not(.is-answered):hover {
    background-color: #8ce200;
    border-color: #8ce200;
    color: #fff;
}

.title {
    width: 100%;
    padding: 20px;
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    background-color: #12cbc4;
    color: #fff;
    box-sizing: border-box;
}
.desc {
    border: 1px solid #8e959f;
    padding: 20px;
    font-size: 18px;
    width: 100%;
    background-color: #fff;
    transition: 0.4s linear all;
    text-align: center;
}
.fade-enter-from {
    opacity: 0;
}
.fade-enter-active {
    transition: all 0.3s linear;
}
.fade-leave-active {
    transition: all 0.3s linear;
    opacity: 0;
    position: absolute;
}
.fade-leave-to {
    opacity: 0;
}

.reset-btn {
    background-color: #ff6372;
    border: 0;
    font-size: 22px;
    color: #fff;
    padding: 10px 25px;
    margin: 10px auto;
    display: block;
}

.result{
    width: 100%;
}


.reset-btn:active, .reset-btn:focus, .reset-btn:hover{
    border: 0;
    outline: 0;
}