layui中checkbox组件,怎么判断是否为checked?判断都勾选了哪个

Question

layui中checkbox组件,怎么判断是否为checked?判断都勾选了哪个?下面的console.log("周一已经选中"),不输出啊?

<form class="layui-form" action="">
   <div class="layui-form-item" id="week" style="height:46px">
       <!-- <label class="layui-form-label">原始复选框</label>        -->
        <div class="layui-input-block" id="week1">
            <!-- 默认选择添加 checked="" -->
            <input type="checkbox" name="monday"    class="week" id="monday"    value="monday"    lay-skin="primary" title="周一" lay-filter="week">
            <input type="checkbox" name="trusday"   class="week" id="trusday"   value="trusday"   lay-skin="primary" title="周二" lay-filter="week">
            <input type="checkbox" name="wednesday" class="week" id="wednesday" value="wednesday" lay-skin="primary" title="周三" lay-filter="week">
            <input type="checkbox" name="thursday"  class="week" id="thursday"  value="thursday"  lay-skin="primary" title="周四" lay-filter="week">
            <input type="checkbox" name="friday"    class="week" id="friday"    value="friday"    lay-skin="primary" title="周五" lay-filter="week">
            <input type="checkbox" name="saturday"  class="week" id="saturday"  value="saturday"  lay-skin="primary" title="周六" lay-filter="week">
            <input type="checkbox" name="sunday"    class="week" id="sunday"    value="sunday"    lay-skin="primary" title="周日" lay-filter="week">                   
        </div>
   </div>
</form>

layui.form.on('checkbox(week)', function (data) {
if($('#monday').attr("checked") === "checked"){
         console.log("周一已经选中")
         }
})

Answer 1

layui.form.on('checkbox(week)', function(data) {
    // 当前点击的复选框是否被选中
    console.log(data.elem.checked)

    // 用prop()判断checked，选中返回true，未选中返回false
    if ($('#monday').prop("checked")) {
        console.log("周一已经选中")
    }else{
        console.log("周一没被选中")
    }
})