dw_lotter_draw/components/iview/index/index.wxml

<view class="i-index i-class">
    <scroll-view 
        scroll-y 
        style="{{parse.setScrollStyle(height)}}" 
        bindscroll="handlerScroll"
        scroll-top="{{scrollTop}}">
        <slot></slot>  
        <view class="i-index-fixed" 
            catchtouchstart="handlerTouchMove" 
            catchtouchmove="handlerTouchMove" 
            catchtouchend="handlerTouchEnd">
            <view class="i-index-fixed-item" 
                wx:for="{{fixedData}}" 
                wx:key="{{index}}" 
                data-index="{{index}}" 
                catchtap="handlerFixedTap">
                {{item}}
            </view>
        </view>  
        <view class="i-index-tooltip" style="{{ isTouches ? 'display:block' : 'display:none' }}">{{currentName}}</view>
    </scroll-view>
</view>
<wxs module="parse">
    module.exports = {
       setScrollStyle : function(height){
           var units = ['%','px','rem','rpx','em','rem'];
           var hasUnits = false;
           for( var i = 0; i < units.length;i++ ){
               var u = units[i];
               if( height.indexOf( u ) > -1 ){
                   hasUnits = true;
                   break;
               }
           }
           return 'height:'+ ( hasUnits ? height : height+'px' );
       }
    }
</wxs>