tree树组件的新增、编辑、删除功能

[xuyan66]

• I have searched the issues of this repository and believe that this is not a duplicate.

What problem does this feature solve?

树组件不能动态修改，本身不就是问题吗

What does the proposed API look like?

去看element ui 文档

[jiubanqingchen]

异步树上可以做新增修改删除并且能够动态的展示，我在树节点select的时候，储存了当前的node,当新增成功后，我会把当前node.dataRef.children=[]置空，然后自己调用一次loadData方法，这可以理解为刷新当前节点，同理修改和删除后我们可以刷新一下父节点就可以了

[loneyao]

异步树上可以做新增修改删除并且能够动态的展示，我在树节点select的时候，储存了当前的node,当新增成功后，我会把当前node.dataRef.children=[]置空，然后自己调用一次loadData方法，这可以理解为刷新当前节点，同理修改和删除后我们可以刷新一下父节点就可以了

请问这个新增的方法要怎么写。

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