The "check all" / "uncheck all" button lets me check or uncheck all checkboxes in my form. The "proceed..." button should getting active as soon as one, more or all checkboxes are checked.The "check all" / "uncheck all" button lets me
阅读背景：
选中一个，部分或全部复选框并激活继续按钮不起作用
来源：互联网
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