''
liukangdong
2024-08-02 2bd2684d71fdfed5ff1ff1ea821d01f245c2623f
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<picker mode="multiSelector" model:value="{{pickerValue}}" range-key="label" range="{{range}}" bindchange="onChange"
    bindcolumnchange="columnChange">
    <view>
        <!-- 如果已经选择了选项,则显示选项的label属性,否则显示placeholder属性。 -->
        <text wx:if="{{label}}"> {{ label }} </text>
        <text style="color: #999" wx:else> {{ placeholder }}</text>
    </view>
</picker>