smoa_wxapp/component/iView/rate/index.wxml

<view class="i-class i-rate" 
    bindtouchmove="handleTouchMove">
    <input type="text" :name="name" wx:value="{{value}}" class="i-rate-hide-input" />
    <view
        wx:for="{{count}}"
        wx:key="item" 
        class="i-rate-star {{ parse.getCurrent( value,index ) }}" 
        data-index="{{index}}" 
        bindtap="handleClick">
        <i-icon type="collection_fill" size="{{size}}"></i-icon>
    </view>
    <view class="i-rate-text" wx:if="{{ value !== 0 }}"><slot></slot></view>
</view>
<wxs module="parse">
var prefixCls = 'i-rate';
module.exports = {
    getCurrent : function( value,index ){
        if( index < value  ){
            return prefixCls + '-current'
        }
    }
}
</wxs>