a标签的href劫持，做判断后在跳转

$.ajax({
               type: "POST",
               url: "/resource/logincheck",
               data: {id: id},
               success: function(data){
                    if (data.ok == 1) {
                        var href_url = dl_link[dlt];
                        if(opentype == 1){
                            window.location.href = href_url;
                        }else if(opentype == 2){
                            //火狐下无法实现模拟点击
                            $(that).attr(‘href‘,href_url);
                            $(that).attr(‘target‘,‘_blank‘);
　　　　　　　　　　　　　　　　　 setTimeout(function(){repl(that);},1000);
                            return true;
                        }else{
                            chwTip(‘无法下载‘);
                            return false;
                        }
                    } else if (data.ok == 0) {
                        if (data.error == 1) {
                            chwTip(‘请先登录‘);
                            return false;
                        } else if (data.error == 3) {
                            chwTip(‘参数错误‘);
                            return false;
                        }
                    }
                },
                async:false
            });

function repl(that){
        $(that).attr(‘href‘,‘javascript:void(0);‘);
        $(that).removeAttr(‘target‘);
    }