uses the Dialog dialog box of element-ui. There is a Tree tree control in the dialog box that can select the tree node. When I first opened the Dialog and initialized the node of the Tree tree control, I reported an error, Cannot read property "setCheckedKeys" of undefined, and then the second time I opened it, it will not report an error, and the data can be rendered normally. How to solve
the idea goes something like this:
//
<button @click="update"></button>
<v-tree-dialog :is-show="isShow" ref="treeUpdate" ></v-tree-dialog>
update() {
this.isShow= true
this.$nextTick(() => {
this.$refs.treeUpdate.init()
})
}
//
<el-tree
:data="treeData"
show-checkbox
node-key="id"
ref="tree"
>
</el-tree>
init() {
this.$refs.tree.setCheckedKeys([1])
},I have the same problem, especially when putting tree in form tickles
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