使用vue写一个复杂的前端登录界面

好的，下面是一个使用 Vue.js 实现的复杂登录界面的示例代码：

<template>
  <div class="login-container">
    <div class="login-header">
      <h1>欢迎登录</h1>
    </div>
    <div class="login-body">
      <form @submit.prevent="submitForm">
        <div class="form-group">
          <label for="username">用户名</label>
          <input type="text" id="username" v-model="form.username" required>
        </div>
        <div class="form-group">
          <label for="password">密码</label>
          <input type="password" id="password" v-model="form.password" required>
        </div>
        <div class="form-group">
          <label for="verifyCode">验证码</label>
          <div class="verify-code">
            <input type="text" id="verifyCode" v-model="form.verifyCode" required>
            <img src="verifyCodeUrl" alt="验证码" @click="refreshVerifyCode">
          </div>
        </div>
        <div class="form-group">
          <label for="rememberMe">记住我</label>
          <input type="checkbox" id="rememberMe" v-model="form.rememberMe">
        </div>
        <button type="submit" class="btn btn-primary" :disabled="loginDisabled">登录</button>
      </form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      form: {
        username: "",
        password: "",
        verifyCode: "",
        rememberMe: false,
      },
      verifyCodeUrl: "",
      loginDisabled: true,
    };
  },
  mounted() {
    this.refreshVerifyCode();
  },
  methods: {
    submitForm() {
      // 提交表单
    },
    refreshVerifyCode() {
      // 刷新验证码
    },
  },
  watch: {
    form: {
      handler() {
        // 监听表单变化
        this.loginDisabled = !this.form.username || !this.form.password || !this.form.verifyCode;
      },
      deep: true,
    },
  },
};
</script>

<style>
.login-container {
  width: 500px;
  margin: 0 auto;
}

.login-header {
  text-align: center;
  margin-bottom: 20px;
}

.login-body {
  padding: 20px;
  background-color: #f5f5f5;
  border: 1px solid #ddd;
  border-radius: 5px;
}

.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: inline-block;
  width: 80px;
  text-align: right;
  vertical-align: middle;
  margin-right: 15px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="checkbox"] {
  width: 200px;
  vertical-align: middle;
}

.verify-code {
  display: inline-block;
  position: relative;
}

.verify-code img {
  position: absolute;
  top: 0;
  right: 0;
  cursor: pointer;
}

.btn {
  margin-top: 20px;
}
</style>

这个登录界面包含了用户名、密码、验证码、记住我等功能，同时还有表单验证和禁用登录按钮等交互效果。