ElementUi: why doesn't filter-node-method='methods' execute; how do I use it? - Codes Helper - Programming Question Answer

ElementUi: why doesn't filter-node-method='methods' execute; how do I use it?

as the title;

Why can"t anything be printed?

Vue-cli element-ui vue.js

Mar.21,2021

this.$refs.tree.filter(val)

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