有如下代码:
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请从下面四个选项中,选择出正确的答案到上面的空白处,实现单击"全选"按钮,将上面所有复选框都选中;单击"全不选"按钮,将上面所有复选框都不选中;单击"反选"按钮,将上面所有复选框进行反选;单击"提交"按钮,将上面选中复选框中的value属性值输出。实现效果如下图所示:
A.
(1)"checked","checked" (2)"checked",false (3)each (4)$(":checkbox")
B.
(1)"checked",true (2)"checked",false (3)each (4)$(":checkbox:checked")
C.
(1)"checked","checked" (2)"checked",false (3)filter (4)$(":checked")
D.
(1)"checked","checked" (2)"checked",false (3)each (4)$(":input")