<picker-view indicator-class='indicator' indicator-style="height: 50px;" style="margin:auto;width: 60%; height: 200px;" value="{{value}}" bindchange="bindChange">

<picker-view-column>

<view wx:for="{{areas}}" style="line-height: 50px" wx:key="i">{{item.name}}</view>

</picker-view-column>

</picker-view>

bindChange: function (e) {

const val = e.detail.value

}