前端学习（1907）vue之电商管理系统电商系统之渲染修改用户的表单的重置操作_const {data:res}=await this.$http.post('login',thi

目录结构

router.js

import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
Vue.use(Router)
 
const router = new Router({
  routes: [{
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      component: Home,
      redirect:'/welcome',
      children: [{
        path: '/welcome',
        component: Welcome
      }]
    }
  ]
});
//挂载路由导航守卫
router.beforeEach((to, from, next) => {
  if (to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next();
})
 
export default router

login.vue

<template>
 
<div class="login_container">
    <div class="login_box">
    <div class="avatar_box">
    <img src="../assets/logo.png">
    </div>
    <!-- 表单区域-->
    <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
    <!-- 登录区域-->
            <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
          </el-form-item>
           <el-form-item prop="password">
            <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
          </el-form-item>
           <el-form-item class="btns">
           <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
          </el-form>
    </div>
</div>
 
</template>
 
<script>
export default{
  data(){
    return{
      //这是登录表单的数据
      loginForm:{
        username:'geyao',
        password:'12345678'
      },
       // 表单验证
      loginFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入用户密码', trigger: 'blur' },
          { min: 6, max: 18, message: '长度在 6 到 18 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods:{
     resetLoginForm(){
   // console.log(this)
    this.$refs.loginFormRef.resetFields();
  },
  login(){
     this.$refs.loginFormRef.validate(async valid =>{
       if(!valid) return;
       const {data:res}=await this.$http.post('login',this.loginForm);
       if(res.meta.status!==200) return this.$message.error('登录失败');
      this.$message.success('登录成功');
      // 1、将登陆成功之后的token, 保存到客户端的sessionStorage中; 
        //   1.1 项目中出现了登录之外的其他API接口，必须在登陆之后才能访问
        //   1.2 token 只应在当前网站打开期间生效，所以将token保存在
        window.sessionStorage.setItem('token', res.data.token)
        // 2、通过编程式导航跳转到后台主页, 路由地址为：/home
        this.$router.push('/home')
     });
  }
  }
}
</script>
 
<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.lo