NG0303:无法绑定到“matTreeNodeDefWhen"，因为它不是“mat-tree-node"的已知属性 [英] NG0303: Can't bind to 'matTreeNodeDefWhen' since it isn't a known property of 'mat-tree-node'
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问题描述
我正在尝试遵循 this 教程，该教程的标题为";带有动态数据的树"，但没有呈现任何内容，我收到此错误.有没有人有什么建议?我已经复制了示例中的代码.
I'm trying to follow this tutorial, the on that is titled "Tree with dynamic data", but nothing is rendered and I got this error. Does anyone have any suggestions? I have copy past the code from the example.
推荐答案
when: hasChild was cause the error in matTreeNodeDefWhen(我忘记将其添加到类中)
when: hasChild was causing the error in matTreeNodeDefWhen (I forgot to add that to the class)
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