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HTML

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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About Vendor Prefixing

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                  <div id="app">
    <div class="container">
      <img :src="src" />
      <h1>{{title}}</h1>
    </div>

    <div class="container">
      <div class="option">
        <!-- 若不是第一天就顯示 -->
        <!-- index != 0 -->
        <a v-if="index > 0" href="#" @click.prevent="changePage(-1) ">
          <i class="fas fa-caret-left fa-3x"></i>
        </a>
        <div class="optionTitle">
          <span class="number">{{index+1 }}</span>
          <span class="type">{{today.type}}</span>
          <span class="title">{{today.title}}</span>
          <a :href="today.link"></a>
        </div>
        <!-- 若不是最後一天就顯示 -->
        <!-- index != this.menu.length -->
        <a v-if="index < total -1" href="#" @click.prevent="changePage(1)">
          <i class="fas fa-caret-right fa-3x"></i>
        </a>
      </div>
    </div>
  </div>
!

CSS 

              
                body {
  background-color: #263238;
}

.container {
  width: 960px;
  margin: 0 auto;

  img {
    width: 100%;
    margin-top: 5%;
  }

  h1 {
    text-align: center;
    padding: 3% 0;
    font-size: 42px;
    color: #fff;
  }

  .option {
    background-color: #eeeeee;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1%;
    border-radius: 100px;
  }

  .optionTitle {
    width: 95%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 28px;

    .number,
    .type,
    .title {
      padding: 0 1%;
      color: #263238;
      font-weight: bold;
    }
  }
  .fas {
    color: #263238;
    padding: 0 10%;
    &:hover{
      color: #757575;
    }
  }
}
!

JS 

              
                let data = {
  title: "Practice Vue With Alex",
  src:
    "https://images.unsplash.com/photo-1593642634315-48f5414c3ad9?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1350&q=80",
  index: 0,
  menu: [
    {
      type: "練習一",
      title: "選單事件綁定",
      link: "#",
    },
    {
      type: "練習二",
      title: "雙向資料表單處理",
      link: "#",
    },
    {
      type: "練習三",
      title: "使用者輸入呈現",
      link: "#",
    },
    {
      type: "練習四",
      title: "篩選資料轉換",
      link: "#",
    },
    {
      type: "練習五",
      title: "互動式資料選單",
      link: "#",
    },
    {
      type: "練習六",
      title: "CSS + jQuery 動畫",
      link: "#",
    },
    {
      type: "練習七",
      title: "資料觀測與設定",
      link: "#",
    },
    {
      type: "練習八",
      title: "家鄉通訊錄 API",
      link: "#",
    },
    {
      type: "練習九",
      title: "TodoList 實做",
      link: "#",
    },
  ],
};
var vm = new Vue({
  el: "#app",
  data: data,
  methods: {
    changePage(change) {
      this.index = (this.index + change + this.total) % this.total;
      // this.index += change;
      // if (this.index < 0) {
      // 	this.index = 0;
      // } else if (this.index > changePage -1) {
      // 	this.index = changePage - 1;
      // }
    },
  },
  computed: {
    //重複的變數
    today() {
      return this.menu[this.index];
    },
    total() {
      return this.menu.length;
    },
  },
});
!
999px

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