canvas父级标签通过wx:if或hidden控制后,canvas不显示了？
<view hidden="{{!isModal}}" class="popup"> <view class="flex-column popup_ranking"> <text class="popup_ranking_name">{{rankDetail.title}}</text> <text class="popup_ranking_title">傻B行为指数榜</text> <view class="flex-column popup_vote"> <text>{{rankDetail.grade}}</text> <text>综合榜</text> </view> </view> <view class="flex-space canvas_case"> <view class="canvas"> <ec-canvas id="mychart-dom-bar" canvas-id="mychart-bar" ec="{{ ec }}"></ec-canvas> </view> <view class="canvas_tital"> <text class="tital_A">没做过</text> <text class="tital_B">偶尔做</text> <text class="tital_C">经常做</text> </view> </view> <button class="btn_detail" hover-class="btn_like" catchtap="toDetail">查看详情</button></view>
值是什么