<input type="button" v-model="sendBtnTxt" @click="getCode" :disabled="msgBtnDisabled" />


data() {
    return {
        sendBtnTxt:'发送验证码' ,//按钮显示内容
        msgBtnDisabled:false, //按钮禁用状态
        timer:null, //计时器
        countdown:60,//时间
    }
  },
 // 验证码60秒倒计时
 getCode(){
	if (!this.timer) {
	    this.timer = setInterval(() => {
	        if (this.countdown > 0 && this.countdown <= 60) {
	            this.countdown--;
	            if (this.countdown !== 0) {
	                this.sendBtnTxt = "重新发送(" + this.countdown + ")";
	                this.msgBtnDisabled=true;
	            } else {
	                clearInterval(this.timer);
	                this.sendBtnTxt = "获取验证码";
	                this.countdown = 60;
	                this.timer = null;
	                this.msgBtnDisabled = false;
	            }
	        }
	    }, 1000);
	 }
 }