一点点进步

str=str.replace(/\"/g,"");//正则去除字符串中的双引号       

//用正则取地址栏参数
        function GetQueryString(name) {
            var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
            var r = window.location.search.substr(1).match(reg);
            if (r != null) return unescape(r[2]); return null;
        }       

//限制文本框只能输入double类型数据

function clearNoNum(event, obj) {
//响应鼠标事件，允许左右方向键移动
event = window.event || event;
if (event.keyCode == 37 | event.keyCode == 39) {
return;
}
//先把非数字的都替换掉，除了数字和.
obj.value = obj.value.replace(/[^\d.]/g, "");
//必须保证第一个为数字而不是.
obj.value = obj.value.replace(/^\./g, "");
//保证只有出现一个.而没有多个.
obj.value = obj.value.replace(/\.{2,}/g, ".");
//保证.只出现一次，而不能出现两次以上
obj.value = obj.value.replace(".", "$#$").replace(/\./g, "").replace("$#$", ".");
}
function checkNum(obj) {
//为了去除最后一个.
obj.value = obj.value.replace(/\.$/g, "");
}

//限制文本框只能输入整形

//只能输入数字(正整数)
function chkPrice(obj) {
obj.value = obj.value.replace(/[^\d]/g, "");
}

        function onKeyPressForDouble(o,event)
        {
            var keyChar = String.fromCharCode(event.keyCode);
            var value = o.value;
            var numstr = "0123456789.";
            if (numstr.indexOf(keyChar)>-1){
                if ((keyChar == ".") && (value.indexOf(".")>-1))
                {
                    event.keyCode=0;
                    return false;
                }
            }else
            {
                event.keyCode=0;
                return false;
            }
            return true;
        }

1.Server.MapPath("../treejquery/demo/treegrid_data.aspx")   //Server.MapPath里面是放文件的相对路径

2.文件流的操作

            FileStream fs = new FileStream(Server.MapPath("../treejquery/demo/treegrid_data.aspx"), FileMode.OpenOrCreate);//文件流
            //编码格式  System.Text.Encoding.GetEncoding("GB2312")一般不容易出现乱码问题             
            Byte[] info = System.Text.Encoding.GetEncoding("GB2312").GetBytes(hidjson.Value);//string与byte[]相互间转换
            fs.Write(info, 0, info.Length);  //将文件内容写入文件
            fs.Flush();//刷新文件 清除缓存流
            fs.Close();//关闭

3.var _html=document.getElementById("testexcel").outerHTML;   //获取包含当前操作的html代码
   $("#testexcel").html()   //只能获取当前操作的子节点的html

//向DataSet中添加多个DataTable
4.
DataSet ds=new DataSet();
DataTable dt1 =new DataTable(); 
   dt1.TableName = "new";
   ds.Tables.Add(dt1.Copy());
 DataTable dt2=new DataTable();
  dt2.TableName="new2";
  ds.Tables.Add(dt2.Copy());

5.distinct  sqlserver数据库不重复数据关键字

6.string AllSubSort = "asdf123><dddddd126";  //正则取字符串中的数字并用逗号隔开
            string strRet = "";
            string pattern = "\\d+";

            MatchCollection matchs = Regex.Matches(AllSubSort, pattern);
            if (matchs != null)
            {
                foreach (Match match in matchs)
                {
                    if (match != null)
                        strRet += match.Groups[0].ToString() + ",";// +match.Groups["key"].Value;
                }
            }
            string[] ar = strRet.Split(new char[] { ',' });
            this.TextBox1.Text = strRet;

7.XML对数据的操作并将table转换为dataset

str = "<?xml version=\"1.0\" standalone=\"yes\"?>" + "<table>" + str + "</table>";                //清洗
XmlDocument doc = new XmlDocument();
 doc.LoadXml(str);
XmlNodeList nodes = doc.SelectNodes("//tr");

for (int j = 0; j < nodes.Count; j++)
                {
                    XmlNode node = nodes[j];
                    for (int i = 0; i < node.ChildNodes.Count; i++) //列的循环,为每个列指定名称  
                    {
                        XmlNode n = doc.CreateNode(XmlNodeType.Element, "col" + i.ToString(), "");
                        n.InnerXml = node.ChildNodes[i].InnerText;
                        node.ReplaceChild(n, node.ChildNodes[i]);
                    }
                }

                //导入Dataset
                DataSet ds = ds = new DataSet();
                StringReader tr = new StringReader(doc.InnerXml);
                ds.ReadXml(tr);
                DataTable dt = ds.Tables[0];

8.  //XML格式字符串替换
public static string ReplaceFontSpan(string s)
        {
            Regex r = new Regex("<head>.*?</head>");
            s = r.Replace(s, "");
            r = new Regex("</?font.*?>");
            s = r.Replace(s, "");
            r = new Regex("</?span.*?>");
            s = r.Replace(s, "");
            r = new Regex("</?a.*?>");
            s = r.Replace(s, "");
            r = new Regex("&nbsp");
            s = r.Replace(s, "");
            r = new Regex("</?tbody.*?>");
            s = r.Replace(s, "");
            r = new Regex("</?table.*?>");
            s = r.Replace(s, "");
            return s;
        }
9.http://www.cainiao8.com/web/js_note/js_regular_expression_blueidea.html    正则表达式牛逼

10./// <summary>
        /// 转换中文excel名称，防止乱码，兼容IE和火狐
        /// </summary>
        /// <param name="fileName">中文名称</param>
        /// <returns></returns>
        public static string GetToExcelName(string fileName)
        {
            string UserAgent = HttpContext.Current.Request.ServerVariables["http_user_agent"].ToLower();
            if (UserAgent.IndexOf("firefox") == -1)
                fileName = HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8);
            return fileName;
        }

 11.附带下载的文件操作
  private void csvfile(string table, string excelname, string _zfcs)         {            
      string name=GetSaveFilePath();            
      string path = Server.MapPath("\\upload") + name + ".csv";            
      FileStream file = new FileStream(path, FileMode.Create);//创建文件流            
      Byte[] info = System.Text.Encoding.GetEncoding(_zfcs).GetBytes(table);          
      file.Write(info, 0, info.Length);//文件内容写入文件流            
      file.Flush();            
      file.Close();            
      file.Dispose();
      long size = info.Length;            
      Response.Clear();            
     Response.ContentType = "application/octet-stream"; //"application/octet-stream";//octet-stream            
     Response.AppendHeader("Content-Disposition", "attachment;filename=" + GetToExcelName(excelname) + ".csv");            
     Response.AppendHeader("Content-Length", size.ToString());            
     Response.AppendHeader("Content-Transfer-Encoding", "binary");            
     Response.ContentEncoding = System.Text.Encoding.UTF8;            
     Response.WriteFile(path, 0, info.Length);            
     Response.Flush();            
     Response.End();
}

12. javascript 动态生成form表单以及隐藏域
function Excelbut( divid,tag,sheetname,excelname,kz,zfcs ){ //excel       
     var _wtb='',_html='';    
     var wtb=GetTableData(divid);//解析table中的colspan与rospan，还原成colspan=2为 <td>1</td> <td>2</td>     
     wtb=wtb.split('☆');    
    _wtb=wtb[0];    
    _html=wtb[1];   
    var form = P_createElement('form', {   
         method: 'post',    
         action:'http://export.yikeba.com/ToEXCELpage.aspx',    
         enctype: 'multipart/form-data'   }, {    
         display: 'none'   }, document.body);  //_html

    P_each(['hidhtml','excelname','sheetname','hidkz','tag','zfcs','wantable'], function (name) {    
          P_createElement('input', {    
              type: 'hidden',    
              name: name,    
              value: {     
              hidhtml:_html, //原始table中colspan=2     
              excelname:excelname,  //'导出应付列表',     
              sheetname: sheetname, //'名称1|',     
              hidkz:kz, //'', //是否允许转化特殊格式 "true"代表要进行特殊格式化  比如DateTime类型倒出来就是日期格式     
              tag:tag, //导出文件参数  默认为空 为空时候就是xls  另一种是csv                
              zfcs:zfcs, //字符参数  默认为空 为空时候就是utf-8  另一种是gb2312                      
              wantable:_wtb //解析table中的colspan与rospan，还原成colspan=2为 <td>1</td> <td>2</td>        
   }[name]    }, null, form);   });

  // submit   
   form.submit();

  // clean up   
P_discardElement(form);  
}

function GetTableData(divid){//解析table中的colspan与rospan，还原成colspan=2为 <td>1</td> <td>2</td>
      var z='',z1='',yta1='',wtb='';
      for(var i=0;i<$("#"+divid).find("table.my_tbl").length;i++){
        if($("#"+divid).find("table.my_tbl:eq("+i+")").attr("id")==undefined){
      $("#"+divid).find("table.my_tbl:eq("+i+")").attr("id","Table"+(i+1));
     }
   var tableid=$("#"+divid).find("table.my_tbl:eq("+i+")").attr("id");
   var _ht=document.getElementById(tableid);
  
   if(i==$("#"+divid).find("table.my_tbl").length-1){
       z1+=tableid;
    }else{
       z1+=tableid+",";
    }
    var zz=P_ExcelHTMLRE(_ht.innerHTML);
    if(i==$("#"+divid).find("table.my_tbl").length-1){
       z+="<table>"+zz+"</table>";
    }else{
       z+="<table>"+zz+"</table>"+"┊";
    }
     } 
 
      
         var _html=z;
 
         var _wtb="";
            var arr=new Array();
            arr=z1.split(',');
            for(var i=0;i<arr.length;i++){
      if(i==arr.length-1){
                  _wtb+="<table>"+P_ExcelHTMLRE(ReCreateTable(arr[i]))+"</table>";
               }else{
                  _wtb+="<table>"+P_ExcelHTMLRE(ReCreateTable(arr[i]))+"</table>"+"┊";
               }
            }
   return _wtb+"☆"+_html;
    }

//将存在colspan与rowspan的table还原成完整的colspan=1 和 rowspan=1
        function ReCreateTable(_id){
      var _tab=$("#"+_id).html();
   var s=$("#"+_id).find("tr th").length;
            $("#"+_id+ " tr").each(function(trindex,tritem){
       //var j=0;
    
                $(tritem).find("td").each(function(tdindex,tditem){
                      var rowspanCount=$(tditem).attr("rowspan");　　
                      var colspanCount=$(tditem).attr("colspan");
     
                      var value=$(tditem).html();
       if($(tditem).find("input[type=text]").val()!=undefined){value=$(tditem).find("input[type='text']").val();$(tditem).html("").html(value);}
       if($(tditem).find("select").val()!=undefined){value=$(tditem).find("select").val();$(tditem).html("").html(value);}
                       var newtd="<td>"+value+"</td>";
                      if(rowspanCount>1){
                        var parent=$(tditem).parent("tr")[0];
                        if(colspanCount==undefined){colspanCount=1}
                        while(rowspanCount>1){
                           var index=$(tditem).index();
                for(var i=0;i<colspanCount;i++){
                 $(parent).next().find("td:eq("+(index)+")").before(newtd);
             }
             parent=$(parent).next();
             rowspanCount--;
                        }
                        $(tditem).attr("rowspan",1);
                      }
                      if(colspanCount>1){
                        while(colspanCount>1){
                            $(tditem).after(newtd);
                            colspanCount--;
                        }
                        $(tditem).attr("colspan",1);
                      }
                });
    
    $(tritem).find("td:eq("+(s-1)+")").html("");//为什么没有更改嘞？
    $(tritem).find("th:eq("+(s-1)+")").html(""); 
            });
   var _newtab=$("#"+_id).html();
   $("#"+_id).html("");
   $("#"+_id).html(_tab);
   if(_id.indexOf("Table")!=-1){$("#"+_id).removeAttr("id");}//移除属性id
   return _newtab;
        }

//针对于IE浏览器对table去掉双引号的问题用正则表达式加双引号

function P_ExcelHTMLRE(_html){if($.browser.msie){var z=_html.match(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/g);if(z){for(var i=0;i<z.length;i++){var y,zSaved=z[i];z[i]=z[i].replace(/(<?\w+)|(<\/?\w+)\s/,function(a){return a.toLowerCase();});y=z[i].match(/\=\w*[^\x00-\xff]*/g);if(y){for(var j=0;j<y.length;j++){var reg1=/(\s+\w+)\s*=\s*([^<>"\s'\s]+)(?=[^<>]*>)/ig;var reg2=/"'([^'"]*)'"/ig;z[i]=z[i].replace(reg1,'$1="$2"').replace(reg2,'\"$1\"');}}

_html=_html.replace(zSaved,z[i]);}}}

return _html;}

13.数据库

create proc ogn_save_mz (   @ognaid varchar(20),   @ognflightinfo text,   @ognadderss varchar(100),   @ognoutinform text,   @ognmarks text,   @right char(1) ) as SET XACT_ABORT ON  --强制出错全部回滚 BEGIN TRAN --内容主体

--出错处理  IF @@ERROR<>0  GOTO errhandle---->發生錯誤直接跳轉到後面，不發生錯誤提交      COMMIT TRAN        set @right=1         RETURN        errhandle:  IF @@ERROR<>0     BEGIN        ROLLBACK TRAN        set @right=0     END        RETURN GO

14.
使浏览器不会在本地缓存结果，response.setHeader("Cache-Control","no-cache");response.setHeader("pragma","no-cache");

15.让文本框只能输入数字(包含小数)

function chkPrice(obj) {
    obj.value = obj.value.replace(/[^\d.]/g, "");
}
//只能输入数字(包含小数)
function chkPrice(obj) {
    obj.value = obj.value.replace(/[^\d.]/g, "");
    //必须保证第一位为数字而不是.
    obj.value = obj.value.replace(/^\./g, "");
    //保证只有出现一个.而没有多个.
    obj.value = obj.value.replace(/\.{2,}/g, ".");
    //保证.只出现一次，而不能出现两次以上
    obj.value = obj.value.replace(".", "$#$").replace(/\./g, "").replace("$#$", ".");
}

function chkLast(obj) {
    // 如果出现非法字符就截取掉 
    if (obj.value.substr((obj.value.length - 1), 1) == '.')
        obj.value = obj.value.substr(0, (obj.value.length - 1));
}
用法：<input type='text' name='Quentity' id='Quentity' style='50px;' onkeyup=\"chkPrice(this);\" onblur=\"chkLast(this)\" onpaste=\"javascript: return false;\" value='" + count + "' />(onpaste=\"javascript: return false;\" 禁止使用粘贴,屏蔽右键)