the vue-pickers used is worthwhile, but there is nothing in the drop-down box and nothing is unconfirmed
<vue-pickers v-show="showDong" slot="bottom" class="slideBox" :selectData="pickData1" v-on:cancel="close" v-on:confirm="confirmFn"></vue-pickers>
<vue-pickers v-show="showUnit" slot="bottom" class="slideBox" :selectData="pickData2" v-on:cancel="close" v-on:confirm="confirmFn1"></vue-pickers>
<vue-pickers v-show="showkehu" slot="bottom" class="slideBox" :selectData="pickData3" v-on:cancel="close" v-on:confirm="confirmFn2"></vue-pickers>
