vue create login-admin

npm install element-ui
npm install vue-router@3

import Vue from 'vue'
import VueRouter from 'vue-router'
Vue.use(VueRouter)
const routes = [
    {
        path: '/',
        name: 'Login',
        component: () => import('@/views/login.vue'),
    }
]
const router = new VueRouter({
    routes
})
export default router;

<template>
  <div id="app">
    <router-view></router-view>
  </div>
</template>
<script>
</script>
<style>
body {
  margin: 0px;
}
</style>

import Vue from 'vue'
import router from './router'
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
import App from './App.vue'
Vue.use(ElementUI);
Vue.config.productionTip = false
new Vue({
  router,
  render: h => h(App),
}).$mount('#app')

<template>
  <div class="background">
    <el-form
      :rules="rules"
      ref="loginForm"
      :model="loginForm"
      class="loginContainer"
    >
      <h3 class="loginTitle">系統(tǒng)登錄</h3>
      <el-form-item prop="username">
        <el-input
          type="text"
           prefix-icon="el-icon-user"
          v-model="loginForm.username"
          placeholder="請輸入用戶名"
        >
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          type="password"
           prefix-icon="el-icon-link"
          v-model="loginForm.password"
          placeholder="請輸入密碼"
        >
        </el-input>
      </el-form-item>
      <el-form-item>
        <SilderVerify ref="verify"></SilderVerify>
      </el-form-item>
      <el-checkbox v-model="checked" class="loginRemember">記住我</el-checkbox>
      <el-button type="primary" style="width: 100%" @click="submitLogin"
        >登錄</el-button
      >
    </el-form>
  </div>
</template>

.background {
  position: absolute;
  background-image: url("../assets/bg.jpg");
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  height: 100vh; 
  width: 100%;
}

<template>
  <div class="drag" ref="dragDiv">
    <div class="drag_bg"></div>
    <div class="drag_text">{{ confirmWords }}</div>
    <div
      ref="moveDiv"
      @mousedown="mouseDownFn($event)"
      :class="{ handler_ok_bg: confirmSuccess }"
      class="handler handler_bg"
      style="position: absolute; top: 0px; left: 0px"
    ></div>
  </div>
</template>
<script>
export default {
  name: "SilderVerify",
  data() {
    return {
      beginClientX: 0 /*距離屏幕左端距離*/,
      mouseMoveState: false /*觸發(fā)拖動狀態(tài)  判斷*/,
      maxWidth: "" /*拖動最大寬度，依據滑塊寬度算出來的*/,
      confirmWords: "向右拖動滑塊驗證" /*滑塊文字*/,
      confirmSuccess: false /*驗證成功判斷*/,
    };
  },
  methods: {
    //mousedown 事件
    mouseDownFn: function (e) {
        console.log('mouseDownFn' + e.clientX)
      if (!this.confirmSuccess) {
        e.preventDefault && e.preventDefault(); //阻止文字選中等 瀏覽器默認事件
        this.mouseMoveState = true;
        this.beginClientX = e.clientX;
      }
    },
    //驗證成功函數
    successFunction() {
      this.confirmSuccess = true;
      this.confirmWords = "驗證通過";
      if (window.addEventListener) {
        document
          .getElementsByTagName("html")[0]
          .removeEventListener("mousemove", this.mouseMoveFn);
        document
          .getElementsByTagName("html")[0]
          .removeEventListener("mouseup", this.moseUpFn);
      } else {
        document
          .getElementsByTagName("html")[0]
          .removeEventListener("mouseup", () => {});
      }
      document.getElementsByClassName("drag_text")[0].style.color = "#fff";
      document.getElementsByClassName("handler")[0].style.left =
        this.maxWidth + "px";
      document.getElementsByClassName("drag_bg")[0].style.width =
        this.maxWidth + "px";
    },
    //mousemove事件
    mouseMoveFn(e) {
      if (this.mouseMoveState) {
        let width = e.clientX - this.beginClientX;
        if (width > 0 && width <= this.maxWidth) {
          document.getElementsByClassName("handler")[0].style.left =
            width + "px";
          document.getElementsByClassName("drag_bg")[0].style.width =
            width + "px";
        } else if (width > this.maxWidth) {
          this.successFunction();
        }
      }
    },
    //mouseup事件
    moseUpFn(e) {
        console.log('moseUpFn' + e.clientX)
      this.mouseMoveState = false;
      var width = e.clientX - this.beginClientX;
      if (width < this.maxWidth) {
        document.getElementsByClassName("handler")[0].style.left = 0 + "px";
        document.getElementsByClassName("drag_bg")[0].style.width = 0 + "px";
      }
    },
  },
  mounted() {
    this.maxWidth =
      this.$refs.dragDiv.clientWidth - this.$refs.moveDiv.clientWidth;
    document
      .getElementsByTagName("html")[0]
      .addEventListener("mousemove", this.mouseMoveFn);
    document
      .getElementsByTagName("html")[0]
      .addEventListener("mouseup", this.moseUpFn);
  },
};
</script>