When using el-tree to write batch deletion, the error is as follows:
TypeError: Cannot read properties of undefined (reading 'getCheckedNodes')
solve:
The main reason is that <el-tree> is missing a line of code, just add ref="tree"
el-tree报TypeError: Cannot read properties of undefined (reading ‘getCheckedNodes‘)解决
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Origine blog.csdn.net/f746262041/article/details/128155776
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