vue实现简单对话

Vue实现简单对话功能

数据绑定与列表渲染

使用Vue的v-for指令渲染对话列表，结合v-model实现输入框双向绑定：

<template>
  <div>
    <div v-for="(msg, index) in messages" :key="index">
      {{ msg.sender }}: {{ msg.text }}
    </div>
    <input v-model="newMessage" @keyup.enter="sendMessage">
  </div>
</template>

<script>
export default {
  data() {
    return {
      messages: [],
      newMessage: ''
    }
  }
}
</script>

消息发送逻辑

添加方法处理消息发送，包括清空输入框和滚动到最新消息：

methods: {
  sendMessage() {
    if (this.newMessage.trim() === '') return

    this.messages.push({
      sender: 'User',
      text: this.newMessage
    })

    this.newMessage = ''
    this.$nextTick(() => {
      window.scrollTo(0, document.body.scrollHeight)
    })
  }
}

模拟AI回复

添加定时器模拟AI回复，展示异步交互效果：

methods: {
  sendMessage() {
    // ...用户消息处理逻辑

    setTimeout(() => {
      this.messages.push({
        sender: 'AI',
        text: 'This is a simulated reply'
      })
    }, 1000)
  }
}

样式优化

添加基础样式改善对话界面视觉效果：

<style scoped>
.message {
  margin: 10px;
  padding: 8px;
  border-radius: 4px;
}
.user-message {
  background-color: #e3f2fd;
  text-align: right;
}
.ai-message {
  background-color: #f5f5f5;
}
input {
  width: 100%;
  padding: 10px;
  box-sizing: border-box;
}
</style>

完整组件示例

整合所有功能的完整组件代码：

<template>
  <div class="chat-container">
    <div 
      v-for="(msg, index) in messages" 
      :key="index" 
      class="message"
      :class="msg.sender === 'User' ? 'user-message' : 'ai-message'"
    >
      {{ msg.sender }}: {{ msg.text }}
    </div>
    <input 
      v-model="newMessage" 
      @keyup.enter="sendMessage"
      placeholder="Type your message..."
    >
  </div>
</template>

<script>
export default {
  data() {
    return {
      messages: [
        { sender: 'AI', text: 'Hello! How can I help you?' }
      ],
      newMessage: ''
    }
  },
  methods: {
    sendMessage() {
      const userMessage = this.newMessage.trim()
      if (!userMessage) return

      this.messages.push({
        sender: 'User',
        text: userMessage
      })

      this.newMessage = ''

      setTimeout(() => {
        this.messages.push({
          sender: 'AI',
          text: `Received: "${userMessage}"`
        })
      }, 800)
    }
  }
}
</script>

<style scoped>
.chat-container {
  max-width: 600px;
  margin: 0 auto;
}
.message {
  margin: 10px;
  padding: 8px 12px;
  border-radius: 18px;
  max-width: 70%;
}
.user-message {
  background-color: #0084ff;
  color: white;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}
.ai-message {
  background-color: #f1f0f0;
  margin-right: auto;
  border-bottom-left-radius: 4px;
}
input {
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  border: 1px solid #ddd;
  border-radius: 20px;
  outline: none;
}
</style>