Vueを使ってメッセージ通知機能を実装する方法

<template>
  <div class="notification">
    <div class="notification-text">{{ message }}</div>
    <button class="notification-close-button" @click="closeNotification">关闭</button>
  </div>
</template>

<script>
export default {
  props: ['message'],
  methods: {
    closeNotification() {
      this.$emit('close'); // 触发close事件，通知父组件关闭当前通知
    }
  }
}
</script>

<style scoped>
.notification {
  position: fixed;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
}

.notification-text {
  flex: 1;
  margin-right: 10px;
}

.notification-close-button {
  background-color: #fff;
  border: none;
  color: #888;
}
</style>

<template>
  <div class="notification-bar">
    <button class="notification-add-button" @click="addNotification">添加通知</button>
    <div v-for="notification in notifications" :key="notification.id">
      <Notification :message="notification.message" @close="closeNotification(notification.id)"></Notification>
    </div>
  </div>
</template>

<script>
import Notification from './Notification.vue';

export default {
  components: {
    Notification
  },
  data() {
    return {
      notifications: []
    }
  },
  methods: {
    addNotification() {
      const id = this.notifications.length + 1;
      const message = `这是第${id}条通知`;
      this.notifications.push({ id, message });
    },
    closeNotification(id) {
      this.notifications = this.notifications.filter(notification => notification.id !== id);
    }
  }
}
</script>

<style scoped>
.notification-bar {
  position: fixed;
  top: 10px;
  right: 10px;
}

.notification-add-button {
  background-color: #409eff;
  border: none;
  color: #fff;
  padding: 8px 16px;
  margin-bottom: 10px;
}
</style>

import Vue from 'vue';
import NotificationBar from './components/NotificationBar.vue';

new Vue({
  render: h => h(NotificationBar),
}).$mount('#app');