在Vue.js中实现JSON数据邮件地址搜索与网格表展示教程

[
  { "id": 1, "Name": "张三", "Email": "zhangsan@example.com", "Phone": "13800001111" },
  { "id": 2, "Name": "李四", "Email": "lisi@example.com", "Phone": "13900002222" },
  { "id": 3, "Name": "王五", "Email": "wangwu@example.com", "Phone": "13700003333" }
]

array.find(callback(element, index, array), thisArg)

<template>
  <div class="email-search-tool">
    <h2>邮件地址搜索</h2>
    <div class="search-input-group">
      <input
        type="email"
        v-model="searchEmail"
        placeholder="请输入要搜索的邮件地址"
        @keyup.enter="performSearch"
      />
      <button @click="performSearch">搜索</button>
    </div>

    <div v-if="userRegistrationGridTable.length > 0" class="result-table">
      <h3>搜索结果</h3>
      <table>
        <thead>
          <tr>
            <th>ID</th>
            <th>姓名</th>
            <th>邮箱</th>
            <th>电话</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="user in userRegistrationGridTable" :key="user.id">
            <td>{{ user.id }}</td>
            <td>{{ user.Name }}</td>
            <td>{{ user.Email }}</td>
            <td>{{ user.Phone }}</td>
          </tr>
        </tbody>
      </table>
    </div>
    <div v-else-if="searchAttempted && userRegistrationGridTable.length === 0" class="no-results">
      <p>未找到匹配的邮件地址。</p>
    </div>
  </div>
</template>

<script>
export default {
  name: 'EmailSearchComponent',
  data() {
    return {
      searchEmail: '', // 用户输入的搜索邮件地址
      // 模拟从后端获取的用户注册数据
      userRegistrationDatas: [
        { id: 1, Name: '张三', Email: 'zhangsan@example.com', Phone: '13800001111' },
        { id: 2, Name: '李四', Email: 'lisi@example.com', Phone: '13900002222' },
        { id: 3, Name: '王五', Email: 'wangwu@example.com', Phone: '13700003333' },
        { id: 4, Name: '赵六', Email: 'zhaoliu@example.com', Phone: '13600004444' }
      ],
      userRegistrationGridTable: [], // 用于展示搜索结果的网格表格数据
      searchAttempted: false // 标记是否进行过搜索
    };
  },
  methods: {
    performSearch() {
      this.searchAttempted = true; // 标记已尝试搜索

      if (!this.searchEmail) {
        this.userRegistrationGridTable = []; // 如果搜索框为空，清空结果
        return;
      }

      // 使用 Array.prototype.find() 查找匹配的邮件地址
      // 可选链操作符 ?. 用于安全地访问可能不存在的属性
      const foundUser = this.userRegistrationDatas.find(d => d?.Email === this.searchEmail);

      // 将找到的用户（如果存在）包装成数组，赋值给网格表格数据
      // 网格表格通常期望一个数组作为其数据源
      this.userRegistrationGridTable = foundUser ? [foundUser] : [];
    }
  }
};
</script>

<style scoped>
.email-search-tool {
  font-family: Arial, sans-serif;
  padding: 20px;
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid #eee;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  border-radius: 8px;
}

h2, h3 {
  color: #333;
  text-align: center;
  margin-bottom: 20px;
}

.search-input-group {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  justify-content: center;
}

.search-input-group input[type="email"] {
  flex-grow: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  max-width: 300px;
}

.search-input-group button {
  padding: 10px 15px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.2s;
}

.search-input-group button:hover {
  background-color: #0056b3;
}

.result-table {
  margin-top: 30px;
}

.result-table table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

.result-table th, .result-table td {
  border: 1px solid #ddd;
  padding: 8px;
  text-align: left;
}

.result-table th {
  background-color: #f2f2f2;
  font-weight: bold;
}

.no-results {
  margin-top: 20px;
  text-align: center;
  color: #666;
}
</style>