vue 验证码界面实现点击后标灰并设置div按钮不可

<template>
 <div class="my-code">
   <input class="my-code-input" type="text" v-model="login_form.captcha" placeholder="Your Captcha">
   <div class="my-code-get" @click="get_captcha" id="new_yan">
     <span v-show="show">Get Captcha</span>
     <span v-show="!show">{{ count }} s</span>
   </div>
 </div>
</template>

<script>
  import store from '@/store'
  import Vue from 'vue'
  import $ from 'jquery'

  export default {
    name: "register",
    data () {
      return {
        show: true,
        count: 60,
        timer: null,
      }
    },
    methods: {
      get_captcha() {
         if (this.login_form.username === '' ) {
          alert('Phone number or mailbox cannot be empty')
        } else {
          if(this.timer == null){
            getValidate(this.login_form.username).then(response => {
              const data = response.data
              console.log(data)
              console.log('成功')
            }).catch(error => {
              console.log(error)
              alert(error)
            })
          } 
          if (!this.timer) {
            this.count = 60;
            this.show = false;
            $(".my-code-get").addClass("huise")
            // 将鼠标设置为不可点击状态
            document.getElementById('new_yan').style.cursor = 'not-allowed'
            this.timer = setInterval(() => {
              if (this.count > 0 && this.count <= 60) {
                this.count--
              } else {
                this.show = true
                clearInterval(this.timer)
                this.timer = null
              }
            }, 1000)
          }
        }
      }
    },
    created: function() {
    },
    watch:{
      timer: function(val){
        console.log(val)
        if(val == null){
           // 监听timer变化，移除不可点击样式
          $(".my-code-get").removeClass("huise")
          document.getElementById('new_yan').style.cursor = 'pointer'
        }
    　　}
    }
  }
</script>

<style scoped>
  .my-input{
    text-align: left;
    display: block;
    width: 400px;
    height: 35px;
    padding: 3px;
    margin: 20px calc(50% - 200px) 20px calc(50% - 200px);
    background:none; 
    outline:none; 
    border:0px;
    border-bottom: 2px solid #dcdcdc;
    border-bottom-left-radius: 1px;
    border-bottom-right-radius: 1px;
    box-sizing: border-box;
    font-family: PingFangSC-Regular;
    font-size: 16px;
  }
  .my-code{
    overflow: hidden;
  }
  .my-code-get{
    float: left;
    width: 120px;
    height: 35px;
    background-color: rgb(7, 187, 127);
    margin: 0 auto 20px 0;
    line-height: 35px;
    font-family: PingFangSC-Regular;
    color: #ffffff;
    border-radius: 5px;
    -webkit-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;
  }
  .my-code-get:active{
    background-color: #0F996B;
  }
  .my-code-get:hover{
    cursor: pointer;
  }
  .my-code-input{
    float: left;
    text-align: left;
    display: block;
    width: 280px;
    height: 35px;
    padding: 3px;
    margin: 0 auto 20px calc(50% - 200px);
    background:none; 
    outline:none; 
    border:0px;
    border-bottom: 2px solid #dcdcdc;
    border-bottom-left-radius: 1px;
    border-bottom-right-radius: 1px;
    box-sizing: border-box;
    font-family: PingFangSC-Regular;
    font-size: 16px;
  }
  .my-code-input:focus{
    border-bottom: 2px solid #0F996B;
    border-bottom-left-radius: 1px;
    border-bottom-right-radius: 1px;
  }
  .huise{
    background-color: #dcdcdc !important;
    color: black;
  }
</style>