<van-slider v-model="value" class="progress" min="1" max="20" active-color="#FF1115"> </van-slider>
改成
<van-slider v-model="value" class="progress" :min="1" :max="20" active-color="#FF1115"> </van-slider>
<van-slider v-model="value" class="progress" min="1" max="20" active-color="#FF1115"> </van-slider>
改成
<van-slider v-model="value" class="progress" :min="1" :max="20" active-color="#FF1115"> </van-slider>