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第 24 期(JavaScript-DOM)：复选框的全选反选 #27

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wingmeng opened this issue Jun 2, 2019 · 0 comments

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wingmeng commented Jun 2, 2019

题目：

有 4 个复选框(checkbox)和一个 button 按钮，点击 button 按钮可实现复选框的全选和反选功能

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