在复选框提交时检查是否为空

function submits(){
var busiType = $("#bussiness option:selected").text();

if($("input[type='checkbox'][name='department']:checked").attr("checked")){
if(confirm('您所选的下拉框为【'+busiType+'】,'+'确认提交？')){
document.publish.submit();
}
}else{
alert('请您勾选复选框);
}
}

bussiness---------下拉框ID

department--------复选框NAME