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elementui 循环出来的table 点击添加课程出现dialog 多选表格

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elementui 循环出来的table 点击添加课程出现dialog 多选表格

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点击添加学习阶段可以创建table，点击添加课程弹出dialog多选表格，
当选择完的时候追加到当前的table里面去，怎么设置当前dialog表格的选中项，求大神解答


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by (71.8m points)

选中的项记录它的索引


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