JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<h1 style="text-align: center;">JavaScript 系列七：第4課 ── 學習 Vue 迴圈的寫法</h1>

<div id="app">
  <!-- 在vue裡，for in用法 === for of，但原生JS並非如此 -->
  <div class="note" v-for="note of notes" :style="{ color: note.color ,'border-color': note.color }">
    <h3 class="title">{{ note.title }}</h3>
    <p class="content">{{ note.content }}</p>
  </div>
</div>

CSS

* {
            padding: 0;
            margin: 0;
        }

        #app {
            display: flex;
            justify-content: space-around;
        }

        .note {
            margin: 20px 0;
            border: 1px solid #ccc;
            width: 30%;
            padding: 20px;
            box-sizing: border-box;
            text-align: center;
        }

JavaScript

const { createApp } = Vue;

createApp({
  data() {
    return {
      notes: [
        {
          title: "春節行程安排",
          content: "吃飽睡，睡飽吃",
          color: "red"
        },
        {
          title: "工作待辦事項",
          content: "詢問各家廠商報價",
          color: "green"
        },
        {
          title: "運動健身計畫",
          content: "每天早上六點去健身",
          color: "blue"
        }
      ]
    };
  },
  mounted() {
    this.notes[0].content = "多出門、到處走走、也要多運動";
  }
}).mount("#app");