使用Vue写一个登录页面

上一博客讲到构建了一个vue项目，现在在那个项目之上实现一个登录页面。

因为用到了element-ui组件，所以需要先安装element-ui组件，进入项目根目录后
执行

cnpm i element-ui

1. 构建项目的目录
   
2. App.vue

<template>
  <div id="app">
    <router-view/>
  </div>
</template>

<script>
export default {
  name: 'App'
}
</script>

main.js

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'

Vue.config.productionTip = false

import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'

//自己写的样式
import './style/theme.css'
import './style/characters.css'

// 注册element-ui
Vue.use(ElementUI)

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  components: { App },
  template: '<App/>'
})

theme.css

body {
  padding: 0;
  margin:0;
  font-family: "Microsoft YaHei UI Light";
}

.outer_label {
  margin-top: 5%;
  position: relative;
  left: 0;
  top: 0;
  width: 100%;
  height: 220px;
  text-align: center;
  filter: brightness(1.4);
}
.inner_label {
  position: absolute;
  left:0;
  right: 0;
  bottom: 0;
  top:0;
  margin: auto;
  height: 50px;
}
.qxs-icon {
  height: 40px;
  width: 50%;
  margin-bottom: 5px;
  padding-left: 10%;
  border: 0;
  border-bottom: solid 1px lavender;
}

characters.css

.text-size12px{
  font-size: 12px;
}
.text-size14px{
  font-size: 14px;
}
.text-size16px{
  font-size: 16px;
}
.float-right {
  float: right;
}
.item-color {
  color: #848487;
}

index.js

import Vue from 'vue'
import Router from 'vue-router'
// import HelloWorld from '@/components/HelloWorld'
import Login from "@/components/login/Login"

Vue.use(Router)

export default new Router({
  routes: [
    {
      path: '/',
      name: 'Login',
      component: Login
    }
  ]
})

Login.vue

<template>
  <div>
    <div class="outer_label">
      <img class="inner_label login_logo" src="../../assets/logo.png">
    </div>
    <div class="login_form">
      <input type="text"  class="qxs-ic_user qxs-icon"  placeholder="用户名" v-model="userName">
      <input type="text"  class="qxs-ic_password qxs-icon"  placeholder="密码" v-model="password">
      <el-button class="login_btn" @click.native="login" type="primary" round :loading="isBtnLoading">登录</el-button>
    </div>
  </div>
</template>



<script>
//  import { userLogin } from '../../api/api';

  export default {
    data() {
      return {
        userName: '',
        password: '',
        isBtnLoading: false
      }
    },
    created () {
      if(JSON.parse( localStorage.getItem('user')) && JSON.parse( localStorage.getItem('user')).userName){
        this.userName = JSON.parse( localStorage.getItem('user')).userName;
        this.password = JSON.parse( localStorage.getItem('user')).password;
      }
    },
    computed: {
      btnText() {
        if (this.isBtnLoading) return '登录中...';
        return '登录';
      }
    },
    methods: {
      login() {
        if (!this.userName) {
          this.$message.error('请输入用户名');
          return;
        }
        if (!this.password) {
          this.$message.error('请输入密码');
          return;
        }
      //  开始真正的登陆请求

      }
    }
  }
</script>
<style>
  .login_form {
    padding-top: 5%;
    padding-left: 35%;
    padding-right: 10%;
  }
  .qxs-ic_user {
    background: url("../../assets/login/ic_user.png") no-repeat;
    background-size: 13px 15px;
    background-position: 3%;
  }
  .qxs-ic_password {
    background: url("../../assets/login/ic_password.png") no-repeat;
    background-size: 13px 15px;
    background-position: 3%;
    margin-bottom: 20px;
  }
  .login_logo {
    height: 100%;
  }
  .login_btn {
    margin-left: 5%;
    width: 50%;
    font-size: 16px;
    background: -webkit-linear-gradient(left, #000099, #2154FA); /* Safari 5.1 - 6.0 */
    background: -o-linear-gradient(right, #000099, #2154FA); /* Opera 11.1 - 12.0 */
    background: -moz-linear-gradient(right, #000099, #2154FA); /* Firefox 3.6 - 15 */
    background: linear-gradient(to right, #000099 , #2154FA); /* 标准的语法 */
    filter: brightness(1.4);
  }
</style>

---

ic_password.png

ic_user.png

logo.png

3. 根据npm run dev 命令启动，启动完成之后会有个链接，访问链接就直接可以看到下面页面：

注：
由于没有和后端相连，所以点登陆没有作用，可以利用axio发送数据包，进行登陆操作。