对接左侧树状接口

liuyg

2021-06-05 7d63a3584b3d5acebb69906a0568679815193a5d

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<div class="Volume" dojoAttachEvent="mousedown:onShowVolume">
    <div class="VolumeSlider" dojoAttachPoint="volumeSlider">
        <div class="VolumeSliderBack" dojoAttachPoint="volumeSliderBack"></div>
        <div class="VolumeSliderHandle" dojoAttachPoint="handle" dojoAttachEvent="mousedown:startDrag, mouseup:endDrag, mouseover:handleOver, mouseout:handleOut"></div>    
    </div>
    <div class="icon"></div>
</div>