获取所有选中框的ids值

var os = $("input[name='rec_ids[]']:checked");
var ids = [];
os.each(function(i){
ids.push(os.eq(i).val());
});
var datas = {data:{ids:ids.toString(),order_id:order_id,type:$("input[name='wl']:checked").val(),wl:wl,sn:sn}};