一个通过类名获取选中复选框id的简单方法:

$(".yourClassName:checkbox:checked").each(function() {
     console.log($(this).attr("id"));
});

<input type="checkbox" id="Checkbox1" class = "chk" value = "1" />
<input type="checkbox" id="Checkbox2" class = "chk" value = "2" />
<input type="checkbox" id="Checkbox3" class = "chk" value = "3" />
<input type="checkbox" id="Checkbox4" class = "chk" value = "4" />
<input type="button" id="demo" value = "Demo" />

<script type = "text/javascript" src = "http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.1.min.js"></script>
<script type="text/javascript">
    $("#demo").live("click", function () {
        $("input:checkbox[class=chk]:checked").each(function () {
            alert("Id: " + $(this).attr("id") + " Value: " + $(this).val());
        });
    });
</script>

http://www.jqueryfaqs.com/Articles/Get-values-of-all-checked-checkboxes-by-class-name-using-jQuery.aspx

获取所有值到数组的简单方法

var valores = (function () {
    var valor = [];
    $('input.className[type=checkbox]').each(function () {
        if (this.checked)
            valor.push($(this).val());
    });
    return valor;

})();

console.log(valores);

如果只有复选框具有给定的类名，则不需要指定:checkbox筛选器。

const newArray = $('.yourClass:checked').map(function(){return $(this).val()}).get();
console.log(newArray);

 $('input.myclass[type=checkbox]').each(function () {
   var sThisVal = (this.checked ? $(this).val() : ""); });

请参阅jQuery类选择器。

 $('input.theclass[type=checkbox]').each(function () {
   var sThisVal = (this.checked ? $(this).val() : "");
 });