如何使用vuejs实现更好的Form validation?

<form v-form name="myform" @submit.prevent="onSubmit" role="form">         <legend class="text-center">Vue-form demo</legend>          <div class="form-group">             <label>邮箱*</label>              <input class="form-control" v-model="model.name" v-form-ctrl required name="name" />                      </div>          <div class="form-group">            <label>用户名*</label>              <input class="form-control" v-model="model.email" v-form-ctrl name="email" type="email" required />                      </div>          <div class="errors" v-if="myform.$submitted">            <p class="bg-danger text-center" v-if="myform.name.$error.required">请输入用户名.</p>            <p class="bg-danger text-center" v-if="myform.email.$error.email">请输入正确的邮箱.</p>          </div>          <button class="btn btn-success btn-block" type="submit">提交</button></form>

new Vue({  el: '#app',  data: {    myform: {},    model: {}  },  methods: {    onSubmit: function() {      console.log(this.myform.$valid);      if(this.myform.$valid==true)        alert("提交成功");    }  }});