Jquery判断是否选中

var slength = $(":checkbox[name=‘News[show_or_hide]‘]:checked").size();
                    if (slength>0 ) {
                       $("div.field-news-other_tag").show();
                       $("div.field-news-sub_special").show();
                    } else {
                       $("div.field-news-other_tag").hide();
                       $("div.field-news-sub_special").hide();
                    } 

$("#show_or_hide").attr("checked",‘true‘);