封装比较好的登录页面

只在setup()函数中写流程，将逻辑代码抽离出来
js 复制代码
<template>
  <div class="wrapper">
    <img class="wrapper__img" src='http://www.dell-lee.com/imgs/vue3/user.png' />
    <div class="wrapper__input">
      <input
        class="wrapper__input__content"
        placeholder="用户名"
        v-model="username"
      />
    </div>
     <div class="wrapper__input">
      <input
        type="password"
        class="wrapper__input__content"
        placeholder="请输入密码"
        v-model="password"
        autocomplete="new-password"
      />
    </div>
    <div class="wrapper__login-button" @click="handleLogin">登陆</div>
    <div class="wrapper__login-link" @click="handleRegisterClick">立即注册</div>
    <Toast v-if="show" :message="toastMessage"/>
  </div>
</template>

<script>
import { reactive, toRefs } from 'vue'
import { useRouter } from 'vue-router'
import { post } from '../../utils/request'
import Toast, { useToastEffect } from '../../components/Toast'

// 处理注册逻辑
const useLoginEffect = (showToast) => {
  const router = useRouter()
  const data = reactive({ username: '', password: '' })

  const handleLogin = async () => {
    try {
      const result = await post('/api/user/login', {
        username: data.username,
        password: data.password
      })
      if (result?.errno === 0) {
        localStorage.isLogin = true
        router.push({ name: 'Home' })
      } else {
        showToast('登陆失败')
      }
    } catch (e) {
      showToast('请求失败')
    }
  }

  const { username, password } = toRefs(data)
  return { username, password, handleLogin}
}

// 处理注册跳转
const useRegisterEffect = () => {
  const router = useRouter()
  const handleRegisterClick = () => {
    router.push({ name: 'Register' })
  }
  return { handleRegisterClick }
}

export default {
  name: 'Login',
  components: { Toast },
  // 职责就是告诉你，代码执行的一个流程
  setup () {
    const { show, toastMessage, showToast } = useToastEffect()
    const { username, password, handleLogin } = useLoginEffect(showToast)
    const { handleRegisterClick } = useRegisterEffect()

    return {
      username, password, show, toastMessage,
      handleLogin, handleRegisterClick,
    }
  }
}
</script>

<style lang="scss" scoped>
</style>