vue模拟微信聊天界面，输入任何文字统一回复‘你好“ 的完整代码

以下是一个简单的 Vue.js 实现模拟微信聊天界面，输入任何文字统一回复‘你好’的完整代码：

<template>
  <div class="chat-room">
    <div class="chat-container">
      <div class="chat-msg" v-for="(msg, index) in messages" :key="index">
        <div class="chat-avatar">
          <img :src="msg.avatar" alt="avatar" />
        </div>
        <div class="chat-content">
          <div class="chat-info">
            <span class="chat-name">{{ msg.name }}</span>
            <span class="chat-time">{{ msg.time }}</span>
          </div>
          <div class="chat-text">{{ msg.text }}</div>
        </div>
      </div>
    </div>
    <div class="chat-input">
      <input type="text" v-model="inputText" @keyup.enter="sendMessage" />
      <button @click="sendMessage">发送</button>
    </div>
  </div>
</template>

<script>
export default {
  name: "ChatRoom",
  data() {
    return {
      inputText: "",
      messages: [
        {
          avatar: "https://i.pravatar.cc/50?img=1",
          name: "小明",
          time: "2021-10-01 12:00",
          text: "你在干嘛？",
        },
        {
          avatar: "https://i.pravatar.cc/50?img=2",
          name: "小红",
          time: "2021-10-01 12:05",
          text: "我在看电影，你呢？",
        },
        {
          avatar: "https://i.pravatar.cc/50?img=3",
          name: "小明",
          time: "2021-10-01 12:10",
          text: "我在写代码",
        },
      ],
    };
  },
  methods: {
    sendMessage() {
      if (this.inputText.trim() === "") return;
      const time = new Date().toLocaleString();
      const newMessage = {
        avatar: "https://i.pravatar.cc/50?img=4",
        name: "我",
        time,
        text: this.inputText,
      };
      this.messages.push(newMessage);
      this.inputText = "";
      setTimeout(() => {
        const reply = {
          avatar: "https://i.pravatar.cc/50?img=5",
          name: "小机器人",
          time: new Date().toLocaleString(),
          text: "你好",
        };
        this.messages.push(reply);
      }, 1000);
    },
  },
};
</script>

<style>
.chat-room {
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.chat-container {
  height: calc(100% - 50px);
  overflow-y: scroll;
  padding: 10px;
}

.chat-msg {
  display: flex;
  margin-bottom: 10px;
}

.chat-avatar {
  margin-right: 10px;
}

.chat-avatar img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
}

.chat-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 5px;
}

.chat-name {
  font-weight: bold;
}

.chat-time {
  color: #999;
}

.chat-text {
  word-wrap: break-word;
}

.chat-input {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 50px;
  background-color: #fafafa;
  padding: 10px;
}

.chat-input input {
  flex: 1;
  height: 30px;
  border: none;
  border-radius: 5px;
  padding: 5px;
}

.chat-input button {
  height: 30px;
  margin-left: 10px;
}
</style>

这段代码实现了一个简单的聊天室界面，包括消息列表、发送消息输入框和发送按钮。其中，消息列表使用 `v-for` 指令遍历 `messages` 数组，每个消息包括头像、昵称、时间和文本内容。发送消息时，通过 `v-model` 指令绑定输入框的值，通过 `@keyup.enter` 监听回车键事件或者点击发送按钮时调用 `sendMessage` 方法，将新消息添加到 `messages` 数组中，并且通过 `setTimeout` 函数模拟了一个简单的自动回复，即在 1 秒后添加一个 “你好” 的消息到 `messages` 数组中。