关于多选框，反选及选取几个：
1.html内容
<!--begin checkbox-->
<div class="c_n_manage_tablexx">
<input type="checkbox" class="c_n_manage_checkbox c_n_manage_check" />
全选（已选择<span class="a_n_manage_num">0</span>个）
<input type="button" disabled="disabled" class="c_n_manage_downbox c_n_manage_dis " id="c_n_manage_downmodel"value="批量下架" />
<input type="button" disabled="disabled" class="c_n_manage_addgroup c_n_manage_dis" value="添加到分组" />
</div>
<!--end checkbox--> <div class="c_n_manage_tablecon">
<table>
<tr _id="1">
<td><input type="checkbox" class="c_n_manage_checkbox"/></td>
</tr>
</table>
</div>
2.JQ代码交互
//多选框设置
$doc.on('click' , '.c_n_manage_check' , function(){ //全选反选
var checkeds = $(".c_n_manage_tablecon").find(":checkbox");
if($(this).attr("checked")){
checkeds.attr("checked",true);
$(".c_n_manage_dis").removeAttr("disabled");
$(".c_n_manage_dis").css("cursor","pointer");
}
else{
checkeds.attr("checked",false);
$(".c_n_manage_dis").attr("disabled", true);
$(".c_n_manage_dis").css("cursor","");
}
}).on('click' , '.c_n_manage_tablecon input' , function(){ //按钮状态
if($(this).attr("checked")){
$(".c_n_manage_dis").removeAttr("disabled");
$(".c_n_manage_dis").css("cursor","pointer");
}
else{
$(".c_n_manage_dis").attr("disabled", true);
$(".c_n_manage_dis").css("cursor","");
}
}).on('click' , ':checkbox' , function(){ //选中几个状态
$(".a_n_manage_num").html($(".c_n_manage_tablecon").find(":checkbox:checked").length);
});
3.展示效果图
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r/A1crgWPlSnDkAAAAAElFTkSuQmCC" 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