<span v-show="show" @click="getCode">獲取驗證碼</span><span v-show="!show" class="count">{{count}} s</span>

 data(){   return {    show: true,    count: '',    timer: null,   }  },  methods:{    getCode(){      const TIME_COUNT = 60;      if (!this.timer) {        this.count = TIME_COUNT;        this.show = false;        this.timer = setInterval(() => {        if (this.count > 0 && this.count <= TIME_COUNT) {          this.count--;         } else {          this.show = true;          clearInterval(this.timer);          this.timer = null;         }        }, 1000)       }    }    }