datetime-picker事件穿透问题解决一劳永逸

最近在使用mint-ui做移动端H5开发，遇到个特别恶心的问题：页面超一屏的时候，ios的datetime-picker在滑动的时候联动到底层一起滚动，网上说的禁止touchMove事件尝试了并不管用。最后的解决办法如下：

1、datetime-picker改用popup加picker替换

2、当popup显示的时候给body加个class。class加 pointer-events: none;

// html
<div class="index" :class="{popPicker:popTimer.visible}">
        <popup v-model="popTimer.visible" v-if="popTimer.visible" position="bottom" style="width:100%;">
            <div class="picker-toolbar">
                <span class="mint-datetime-action mint-datetime-cancel" @click="popTimer.visible=false">取消</span>
                <span class="mint-datetime-action mint-datetime-confirm" @click="setTimer">确定</span>
            </div>
            <picker :slots="minutes" @change="timerChange"></picker>
        </popup>
</div>
// css
.index.popPicker{
    pointer-events: none;
}
.v-modal,.mint-datetime,.picker-slot-wrapper,.mint-popup{
    pointer-events: all;
}