html
<div class="button">
<van-button type="info" v-show="show" @click="getCode">获取验证码</van-button>
<van-button type="info" v-show="!show" class="count">{{count}} s</van-button>
</div>
data
return {
show: true,
count: '',
timer: null,
}
js
getCode(){
const TIME_COUNT = 10;
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)
}
}