php+ajax实现带进度条的大数据排队导出思路以及源码

                }

            }
            var ii=0;
            for (var i in count_arr){
                  type_arr[ii]=i;
                  ii++;
            }
            exportCsvConfirm(num, processnum);
        }
    });
}

function exportCsvConfirm(num, processnum)
{
    var msg = '需要导出的数据有 <span style="color: red">' + num + '</span> 行，可能会占用您较多时间来进行导出。<br />您还需要继续吗？';
    $.dialog.confirm(msg, function () {
        $('#loading').html('');
        processed_count = 0;
        index = 1;
        win.$('#process_bg').hide().width('0%').show();
        win.$('#process_num').html('0');

        $.dialog.through({
            title: '数据导出进度',
            content: win.document.getElementById('processbar'),
            lock: true,
            opacity: '.1'
        },
        function(){
                window.location.reload();
        });

        win.$('#progress_info').show().text('正在导出数据，请耐心等待，请勿关闭窗口...');

        excel_export2(num, processnum);
    });
}

function excel_export2(num, processnum){

      tabletype=type_arr[iii];
      num = count_arr[tabletype];
      if(typeof(tabletype)=='undefined'&&typeof(num)=='undefined'){
            return false;
      }
      if(ajaxmark==1){

            index = 1;
            ajaxmark=2;