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我state中有一个detailData: undefined,请求到数据后将detailData赋值为一个对象 页面整体在View标签中,并用代码d && <View>控制页面渲染 在detailData有数据前,整体的View标签是不应该渲染的,其他读取detailData的变量也没有报错 唯独