<el-form :model="ruleForm" :rules="rules" ref="ruleForm" class="demo-ruleForm loginFrom">
 <h1 style="font-size: 1.5rem;color: #fff;font-weight: bold;padding: 1rem 0;">登陆</h1>
 <el-form-item >
  <el-input placeholder="账号" v-model="ruleForm.userName"></el-input>
 </el-form-item>
 <el-form-item>
  <el-input type="password" v-model="ruleForm.password" placeholder="密码"></el-input>
 </el-form-item>
 <div style="padding: 1rem 0 2rem 0;" class="clear">
  <span class="lf" style="color:#0489cc;">帮助</span>
  <div class="rt">
   <el-checkbox v-model="checked" style="color:#a0a0a0;">一周内自动登录</el-checkbox>
   <span @click="clearCookie" style="cursor: pointer;color: #f19149;font-size: 0.75rem;margin-left: 5px;">忘记密码？</span>
  </div>
 </div>
 <el-button type="primary" @click="submitForm('ruleForm')" style="width: 100%;">登陆</el-button>
</el-form>

 data () {
 return {
   ruleForm: {
    userName: '', //用户名
    password: '' //密码
   },
 }
}
methods: {
  //点击登录调用方法
  submitForm(formName) {
    //保存的账号
    var name=this.ruleForm.userName;
    //保存的密码
    var pass=this.ruleForm.password;
    if(name==''||name==null){
     alert("请输入正确的用户名");
     return
    }else if(pass==''||pass==null) {
     alert("请输入正确的密码");
     return
    }
    //判断复选框是否被勾选 勾选则调用配置cookie方法
    if(this.checked=true){
      //传入账号名，密码，和保存天数3个参数
     this.setCookie(name,pass,7);
    }
    //接口
    var url='myserver/user/login';
    this.$http.post(url,this.ruleForm,{emulateJSON:true})
     .then(res=>{
      if(res.body=="fail"){
       alert("用户名或密码错误,请重新输入");
       this.ruleForm.userName='';
       this.ruleForm.password='';
       return
      } else{
      alert（"登陆成功！"）
       this.$router.push("/index")
      }
   });
  },
//设置cookie
 setCookie(c_name,c_pwd,exdays) {
  var exdate=new Date();//获取时间
  exdate.setTime(exdate.getTime() + 24*60*60*1000*exdays);//保存的天数
  //字符串拼接cookie
  window.document.cookie="userName"+ "=" +c_name+";path=/;expires="+exdate.toGMTString();
  window.document.cookie="userPwd"+"="+c_pwd+";path=/;expires="+exdate.toGMTString();
 },
 //读取cookie
 getCookie:function () {
  if (document.cookie.length>0) {
   var arr=document.cookie.split('; ');//这里显示的格式需要切割一下自己可输出看下
   for(var i=0;i<arr.length;i++){
    var arr2=arr[i].split('=');//再次切割
    //判断查找相对应的值
    if(arr2[0]=='userName'){
     this.ruleForm.userName=arr2[1];//保存到保存数据的地方
    }else if(arr2[0]=='userPwd'){
     this.ruleForm.password=arr2[1];
    }
   }
  }
 },
 //清除cookie
 clearCookie:function () {
  this.setCookie("","",-1);//修改2值都为空，天数为负1天就好了
 }
},
//页面加载调用获取cookie值
mounted(){
    this.getCookie()
    }