点击按钮 写了个遮罩弹框 可以点开，但是点开以后，想要再次点击遮罩部分取消遮罩 如下代码需要？
<image wx:if="{{flag}}"class="xindex2" bindtap='changeYL' src="/resource/Zhicon.png"></image>
<view class="commodity_screen" bindtap="hideModal" wx:if="{{showModal}}" ></view>
<view class="commodity_attr_box" wx:if="{{showModal}}">
<cover-view class="showBox" >
<cover-image class="left" src="https://www.huaxintop.com/images/znpd.png"></cover-image>
<cover-view class="right">1</cover-view>
<br/>
</cover-view>
<cover-view class="content">
介绍：2
</cover-view>
</view>
js：
changeYL: function () {
this.setData({
showModal: true
})
},
hideModal: function () {
this.setData({
showModal: false
});
},
2 回复
<image class="xindex2" bindtap='changeYL' src="/resource/Zhicon.png" />
<view class="commodity_screen" bindtap="changeYL"></view>
<view class="commodity_attr_box" wx:if="{{showModal}}">
<cover-view class="showBox" >
<cover-image class="left" src="https://www.huaxintop.com/images/znpd.png" />
<cover-view class="right">1</cover-view>
</cover-view>
<cover-view class="content">介绍：2</cover-view>
</view>
changeYL() {
this.setData({
showModal: !this.data.showModal
})
},
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