制作一个基于vue的倒计时demo

 <p id="example">
 <button @click="send">
 <span v-if="sendMsgDisabled">{{time+'秒后获取'}}</span>
 <span v-if="!sendMsgDisabled">send</span>
 </button>
 </p>

var vm = new Vue({
 el: '#example',
 data() { return {
 time: 60, // 发送验证码倒计时
 sendMsgDisabled: false
 }
 },
 methods: {
 send() { let me = this;
 me.sendMsgDisabled = true; 
 let interval = window.setInterval(function() {
 if ((me.time--) <= 0) {
 me.time = 60;
 me.sendMsgDisabled = false;
 window.clearInterval(interval); //停止
 }
 }, 1000);
 }
 }
 })