Javascript函数-备忘录(转)

/检测文件扩展名
function EuwCheckExt(path,extList){
var ext = getFileExt(path);
var cExt = extList.indexOf("," + ext + ",");
if (ext == "") return -1;
if (cExt){
  return 1;
}else{
  return 0;
}

}

//取得文件扩展名
function getFileExt(path){
var tmp = path;
tmp = tmp.substring(tmp.lastIndexOf(".")+1);
return tmp.toUpperCase();

}

//操作样式
function init(a){
  var styleText1 = "";
    styleText1 +="font-family: Arial, Verdana;";
    styleText1 +="font-size: 18pt;";
    styleText1 +="font-weight: bold;";
    styleText1 +="font-style: italic;";
    styleText1 +="color: #33CC00;";
    //styleText1 +="background-color: #CCCC00;";
    styleText1 +="filter: DropShadow(Color=#000000, OffX=1, OffY=1,
Positive=0);";
    tdTmp.style.cssText=styleText1;

}

//粘贴前过滤剪贴板数据
function EuwColorOnBeforePaste(objColor){
    clipboardData.setData('text',clipboardData.getData('text').replace(/[^a-fA-F0-9]/g,'').toUpperCase());

}

//颜色值输入
function EuwColorOnKeyUp(objColor){

    objColor.value=objColor.value.replace(/[^#a-fA-F0-9]/g,'').toUpperCase();

}

//setTimeout()应用
function loopshow(name){
xxx.location="a.jpg";
setTimeout("loopshow(" + name + ");",100);

}

//数字输入
function EuwCheckNumOnKeyUp(obj){
    obj.value=obj.value.replace(/[^0-9.]/g,'').toUpperCase();

}

//按比例缩放图片
var loadNum=0;
var loadTimes = 3;
checkShowSize = false;
function showsize()
{
//document.upload.FILE1.value = trim(document.upload.FILE1.value);
document.all.view.src = document.upload.FILE1.value;
//alert(document.all.view.height + "x" + document.all.view.width + " -> " +
document.all.view.fileSize);

var diskuse = 5190970
var quota = 5242880
    var maxfilesize = 512000;
    var showimg = new Image();
    Image.create(22,22).
    showimg.src = document.upload.FILE1.value;
    alert(showimg.fileSize);
    if(showimg.fileSize>0)
{
  if(showimg.fileSize > maxfilesize)
  {
   alertmsg = "您选中的图片大于" + maxfilesize+ ",目前字节数=" +
showimg.fileSize;
   return false;
  }

  if(showimg.fileSize > quota - diskuse) {
   alertmsg = "您选中的图片文件过大,或者相册已满";
   return false;
  }

  if(showimg.width > 100)
  {
   alert(showimg.width);
   var ori_w= showimg.width;
   var ori_h = showimg.height;
   showimg.width = 100;
   showimg.height = ori_h * showimg.width / ori_w;
  }

  if(showimg.width < 5 || showimg.height <5)
  {
   showimg.width = showimg.height = 150;
  }

  //document.all.view.src = showimg.src;
  document.all.view.style.width = showimg.width;
  document.all.view.style.height = showimg.height;
  checkShowSize = true;
  return true;
} else if(loadNum
  loadNum ++ ;
  setTimeout('showsize()',500);
} else if(loadNum>=loadTimes){
  loadNum = 0;
  alertmsg = "图片字节数=0,请换张图片上传";
  return false;
}

}

//字符串长度属性
String.prototype.len=function()
{
    return this.replace(/[^\x00-\xff]/g,"**").length;

}

//日期自动补0
function appendZero(n){return(("00"+ n).substr(("00"+ n).length-2));}

//字符串去空格属性
function String.prototype.trim(){return this.replace(/(^\s*)|(\s*$)/g,"");}

//打开一个全屏或者居中的窗口
function openwindow( url, winName,width,height,otherproperty)
{
   //width,height
   //otherproperty
   xposition=0; yposition=0;
   if ((parseInt(navigator.appVersion) >= 4 ))
   {
        if(width == 1)
        {
            width=screen.width - 10;
            height=screen.height - 55;
            xposition = 0;
            yposition = 0;
        }
        else
        {
            if (width < 1)
            {
                width=screen.width*width;
                height=screen.height*height;
            }
            xposition = (screen.width - width) / 2;
            yposition = (screen.height - height) / 2 - 15;
        }

      if (yposition < 0 )
      {
            yposition = 0;
      }
    }
    theproperty= "width=" + width + ", " + "height=" + height + ", "
        + "screenX=" + xposition + ", " //Netscape
        + "screenY=" + yposition + ", " //Netscape
        + "left=" + xposition + ", " //IE
        + "top=" + yposition + ", "; //IE

    theproperty = theproperty + "location=0, "
        + "menubar=0, "
        + "resizable=0, "
        + "scrollbars=1, "
        + "status=0, "
        + "toolbar=0, "
        + "hotkeys=0, ";
    theproperty = theproperty + ', ' + otherproperty;
    winobj=window.open( url,winName,theproperty );
    if (url == "about:blank")
    {
        winobj.document.writeln("Loading.....");
    }
    winobj.focus();
    return winobj;

}

//给定图片的最大高宽，取得缩放的比例
function EuwResizeRatio(maxWidth,maxHeight, objImgTmp)
{
    var hRatio;
    var wRatio;
    var Ratio = 1;
    var maxHeight;
    var maxWidth;
    var width = objImgTmp.width;
    var height = objImgTmp.height;
    wRatio = EuwStr2Float(maxWidth / width,2);
    hRatio = EuwStr2Float(maxHeight / height,2);
    if (wRatio<1 || hRatio<1){
        if (wRatio<=hRatio)
            Ratio = wRatio
        else
            Ratio = hRatio
    }
    return Ratio;
}
//改进版本，结合setTimeout传递参数做法（脚本块中有此方法）
function EuwResizeRatio(maxWidth,maxHeight,objImgTmp,srcImg)
{
    var hRatio;
    var wRatio;
    var Ratio = 1;
    var isKernel = true;
    if (objImgTmp==null) {isKernel = false};
    if (isKernel && objImgTmp.width==0) {isKernel = false};
    var width = 0;
    var height = 0;
    if (isKernel){
        width = objImgTmp.width;
        height = objImgTmp.height;
        wRatio = EuwStr2Float(maxWidth / width,2);
        hRatio = EuwStr2Float(maxHeight / height,2);
        //alert(wRatio + "--" + hRatio);
        if (maxWidth==0){//
            if (hRatio<1) Ratio = hRatio;
        }else if (maxHeight==0){
            if (wRatio<1) Ratio = wRatio;
        }else if (wRatio<1 || hRatio<1){
            Ratio = (wRatio<=hRatio?wRatio:hRatio);
        }
        width = width * Ratio;
        height = height * Ratio;
        if (Ratio<1){
         objImgTmp.width = width;
        objImgTmp.height = height;
        }
        if (srcImg!=null){
            srcImg.width = width;
            srcImg.height = height;
        }
    }else{
        var
timer=window.setTimeout(EuwResizeRatio,100,maxWidth,maxHeight,objImgTmp,srcImg);
    }

}

function String.prototype.trim(){return this.replace(/(^\s*)|(\s*$)/g,"");}
function gf_AppendZero(n){return(("00"+ n).substr(("00"+ n).length-2));}//日期自动补零程序//
//取得当前系统日期时间
function gf_now()
{
var fs_now = new Date();
var fs_return="";
fs_return = fs_now.getFullYear() + "-" + gf_AppendZero(fs_now.getMonth() +
1) + "-" + gf_AppendZero(fs_now.getDate());
fs_return +=" " + gf_AppendZero(fs_now.getHours()) + ":" +
gf_AppendZero(fs_now.getMinutes()) + ":" +
gf_AppendZero(fs_now.getSeconds());
return fs_return;

}

//取得当前系统日期
function gf_today()
{
var fs_now = new Date();
var fs_return="";
fs_return = fs_now.getFullYear() + "-" + gf_AppendZero(fs_now.getMonth() +
1) + "-" + gf_AppendZero(fs_now.getDate());
return fs_return;

}

//验证日期是否合法(true/false)
function  gf_chkdate(as_datestr)
{
var
fs_year="";fs_mon="";fs_day="";fs_time="";fs_hour="";fs_min="";fs_sec="";fs_obj="";fs_syn="";
var fi_loop,fi_len

fi_len = as_datestr.length
fs_obj = "year"
if (fi_len<=0) return true;
for (fi_loop=0;fi_loop<fi_len;fi_loop++ )
{
  if (as_datestr.charAt(fi_loop)==" " && fs_obj == "day" ) fs_obj = "hour";
  if  (as_datestr.charAt(fi_loop)==  '-'|| as_datestr.charAt(fi_loop)==
'/')
  {
   if (fs_syn == "")
   {
    fs_syn = as_datestr.charAt(fi_loop)
   }
   else
   {
    if (fs_syn != as_datestr.charAt(fi_loop)) return false //没有用统一的"-"或"/"符号错误
   }

   if (fs_obj == "year" )
   {
    fs_obj = "month"
   }
   else if (fs_obj == "month" )
   {
    fs_obj = "day"
   }
  }
  else if (as_datestr.charAt(fi_loop)==  ':')
  {
   if (fs_obj == "hour" )
   {
    fs_obj = "minute"
   }
   else if (fs_obj == "minute" )
   {
   fs_obj = "second"
   }
  }
  else //取出相应的值
  {
   if (!(as_datestr.charAt(fi_loop) >= 0 && as_datestr.charAt(fi_loop) <=
9)) return false
   if (fs_obj == "year" )
   {
    fs_year += as_datestr.charAt(fi_loop)
   }
   else if (fs_obj == "month" )
   {
    fs_mon += as_datestr.charAt(fi_loop)
   }
   else if (fs_obj == "day" )
   {
    fs_day += as_datestr.charAt(fi_loop)
   }
   else if (fs_obj == "hour" )
   {
    if (as_datestr.charAt(fi_loop)!= " ") fs_hour +=
as_datestr.charAt(fi_loop)
   }
   else if (fs_obj == "minute" )
   {
    fs_min += as_datestr.charAt(fi_loop)
   }
   else if (fs_obj == "second" )
   {
    fs_sec += as_datestr.charAt(fi_loop)
   }
  }
}
    //验证时间的合法性
if (fs_hour != "")
{
  if ( fs_min == "" )
  {
   return false
  }
  else
  {
   if (fs_sec == "") fs_sec = "0"
  }
  if ( fs_hour > 24 || fs_hour < 0 || fs_min >= 60 || fs_min < 0 || fs_sec
>= 60 || fs_sec < 0 )
  {
   return false //时间错误
  }
  if (fs_hour.length>2 || fs_min.length>2) return false
}
//验证日期的合法性
if ( fs_year == "" || fs_mon=="" || fs_day=="" ) return false;
if (fs_year.length == 2 )
{
  fs_year = '20'+ fs_year;
}
else if (fs_year.length != 4 )
{
  return false;
}
if ( fs_year.length > 4 || fs_mon.length > 2 || fs_day.length > 2 ) return
false;
if (!(fs_year>1901 && fs_year < 2999 && 1<=fs_mon  && 12>=fs_mon &&
31>=fs_day && 1<=fs_day) ) return false;
if (( fs_mon==4 || fs_mon==6 || fs_mon==9 || fs_mon==11 ) && (fs_day>30))
return false;
if  ((fs_year % 4 == 0) && (fs_mon==2) && (fs_day > 29))   return false;
if  (!(fs_year % 4 == 0) && (fs_mon==2) && (fs_day > 28))   return false;

return true;

}

//验证只能录入整数onkeypress
function gf_checkint()
{
if ((window.event.keyCode<48 || window.event.keyCode>57) &&
window.event.keyCode!=45 ) window.event.returnValue=false;

}

//验证只能录入实数onkeypress
function gf_checkobjfloat(objectname)
{
if ((window.event.keyCode<45 || window.event.keyCode>57 ||
window.event.keyCode==47) && window.event.keyCode!=45)
window.event.returnValue=false;
if( window.event.keyCode==46 && objectname.value.indexOf(".")>-1)
window.event.returnValue=false;

}

//验证不能为空的数据//
function gf_mandatory(as_prompt)
{
   //as_prompt:tbx_a,不能为空*tbx_b,不能为空*
   var fs_src = as_prompt;
   var fas_p = fs_src.split("*");
   var fas_n;
   for(var i=0;i<fas_p.length;i++)
   {
      if (fas_p[i]!="")
      {
         fas_n = fas_p[i].split(",");
         if (fas_n.length<2){alert("验证表达式有误，请检查");return false;}
         if (document.all(fas_n[0])==null){alert("Control Name:" + fas_n[0]
+ " is wrong!");return false;}
         if (gf_trim(document.all(fas_n[0]).value)=="")
         {
            alert(fas_n[1]);
            document.all(fas_n[0]).focus();
            return false;
         }
      }
   }
   return true;

}

//检查是否是数字，小数
function gf_chknum(ai_num)
{
   var fi_i,fi_j,fi_dot,strTemp;
   strTemp=".0123456789";
   fi_dot = 0;  //小数点个数
   if (ai_num.toString().length == 0) return false;
   if (ai_num.charAt(0) == "." || ai_num.charAt(ai_num.length - 1) == ".")
return false;
   for(fi_i=0;fi_i<ai_num.length;fi_i++)
   {
      fi_j = strTemp.indexOf(ai_num.charAt(i));
      if (fi_j == -1) return false;
  if (ai_num.charAt(i) == ".")
      {
   fi_dot++;
   if (fi_dot>1) return false;
      }
   }
   return true;

}

//去除字符串的空格
function gf_trim(as_string)
{
   while(as_string.length > 0 && as_string.indexOf(" ")==0) as_string =
as_string.substr(1);
   while(as_string.length > 0 && as_string.lastIndexOf("
")==(as_string.length-1)) as_string =
as_string.substr(0,as_string.length-1);
   return as_string;

}

//只能输入大写字符
function gf_lc2uc()
{
if (window.event.keyCode>=97 & window.event.keyCode<=122 )
{
  window.event.keyCode = window.event.keyCode - 32;
}

}

/**
格式化日期函数
D--日期2004-12-25
DT--日期时间2004-12-25 12:05:56
**/
function gf_formatdate(as_date,as_datetype)
{
//2003-11-12 11:25:13
var fs_tmp = new Array();
var fs_date = (as_date==null?"":gf_trim(as_date));
var fs_datetype = (as_datetype==null?"D":"DT");
if (fs_date=="") return fs_date;
var fi_space = fs_date.indexOf(" ");
var fs_ymd = fs_date.substr(0,fi_space);
var fs_hms = fs_date.substr(fi_space+1);
   if (fs_ymd == "") {fs_ymd = fs_hms;fs_hms = "";}
fs_tmp = fs_ymd.split("-");
fs_ymd = (fs_tmp[0].length==2?("20" + fs_tmp[0]):fs_tmp[0]) + "-" +
gf_AppendZero(fs_tmp[1]) + "-" + gf_AppendZero(fs_tmp[2]);
if (fs_hms != "")
{
    fs_tmp = fs_hms.split(":");
    fs_hms = " " + gf_AppendZero(fs_tmp[0]) + ":" + gf_AppendZero(fs_tmp[1])
+ (fs_tmp.length==3?(":" + gf_AppendZero(fs_tmp[2])):"");
}
fs_date = fs_ymd + (fs_datetype=="D"?"":fs_hms);
return fs_date;

}

//集装箱箱号验证
//Author: sundy 20003-4-28
//格式：gf_chkcntrno(as_cntrno, fi_choice ) return( boolean )
//功能：验证集装箱箱号：
//参数：
//   as_cntrno 是否符合国际标准，
//返回值：True 符合国际标准或强行通过(特殊箱号)
//举例：gf_chkcntrno( 'TEXU2982987', 0 )
function gf_chkcntrno(as_cntrno,ai_choice)
{
var fi_ki;
var fi_numsum;
var fi_nummod;
var fai_num = new Array(11);
var fb_errcntrno=false;

if (as_cntrno==null) return true; //null不进行验证
if (gf_trim(as_cntrno)=="") return true; //空不进行验证

if (as_cntrno.length == 11)   //国际标准为11位，最后一位是校验位，若不是11位肯定不是标准箱
{ for(fi_ki=1;fi_ki<=11;fi_ki++)
   fai_num[fi_ki] = 0;
  for(fi_ki=1;fi_ki<=4;fi_ki++)     //根据国际标准验证法则处理箱号前面的4个英文字母

  {
   fch_char=as_cntrno.charAt(fi_ki-1).toUpperCase();
   switch(true)
   { case (fch_char=="A"):{fai_num[fi_ki] = 10;break;}
    case (fch_char>="V" && fch_char<="Z"):{fai_num[fi_ki] =
fch_char.charCodeAt() - 52;break;}
    case (fch_char>="L" && fch_char<="U"):{fai_num[fi_ki] =
fch_char.charCodeAt() - 53;break;}
    default:{fai_num[fi_ki] = fch_char.charCodeAt() - 54;break;}
   }
  }
  for(fi_ki=5;fi_ki<=11;fi_ki++)
  {  fch_char=as_cntrno.charAt(fi_ki-1);
   fai_num[fi_ki] = parseInt(fch_char); //ctype((mid(as_cntrno, fi_ki, 1)),
integer)
      }
  fi_numsum = 0

  for(fi_ki=1;fi_ki<=10;fi_ki++)
  {
   fi_sqr = 1;
   for(i=1;i<fi_ki;i++){fi_sqr *=2;}
   fi_numsum += fai_num[fi_ki] * fi_sqr;
  }

  if (as_cntrno.substr(0,4) == "HLCU") fi_numsum = fi_numsum - 2; //hapaq
lloyd的柜号与国际标准相差2
  fi_nummod = fi_numsum % 11;
  if (fi_nummod == 10) fi_nummod = 0;
  if (fi_nummod == fai_num[11]) fb_errcntrno = true;
  return fb_errcntrno;
}else{
    return fb_errcntrno;
}

}

/*由于在Js中Replace只能替换一次,下面函数能全局替换2003.5.13 -sundy
as_expression --包含要替换的字符串
as_find --搜索的子字符串
as_replacement --要替换的字符串
替换字符串函数,如:"'"转换为"''"
*/
function gf_replace(as_expression,as_find,as_replacement)
{
   var fs_expression = as_expression;
   var fs_find = as_find;
   var fs_replacement = as_replacement;
   if (fs_expression == "") return "";
   if (fs_find == "") return "";
   //构造正则表达式\,$,(,),*,+,.,[,?,{,^,|为特殊字符,必须转义后替换
   fs_regx1 = /\\/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\\");
   fs_replacement = fs_replacement.replace(fs_regx1,"\\");

   fs_regx1 = /\$/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\$");
   fs_replacement = fs_replacement.replace(fs_regx1,"\$");
   fs_regx1 = /\(/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\(");
   fs_replacement = fs_replacement.replace(fs_regx1,"\(");
   fs_regx1 = /\)/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\)");
   fs_replacement = fs_replacement.replace(fs_regx1,"\)");
   fs_regx1 = /\*/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\*");
   fs_replacement = fs_replacement.replace(fs_regx1,"\*");
   fs_regx1 = /\+/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\+");
   fs_replacement = fs_replacement.replace(fs_regx1,"\+");
   fs_regx1 = /\./gi;
   fs_find = fs_find.replace(fs_regx1,"\\\.");
   fs_replacement = fs_replacement.replace(fs_regx1,"\.");
   fs_regx1 = /\[/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\[");
   fs_replacement = fs_replacement.replace(fs_regx1,"\[");
   fs_regx1 = /\?/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\?");
   fs_replacement = fs_replacement.replace(fs_regx1,"\?");
   fs_regx1 = /\^/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\^");
   fs_replacement = fs_replacement.replace(fs_regx1,"\^");
   fs_regx1 = /\{/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\{");
   fs_replacement = fs_replacement.replace(fs_regx1,"\{");
   fs_regx1 = /\|/gi;
   fs_find = fs_find.replace(fs_regx1,"\\\|");
   fs_replacement = fs_replacement.replace(fs_regx1,"\|");
   fs_find = "/" + fs_find + "/gi";

   //返回替换后的值
   return fs_expression.replace(eval(fs_find),fs_replacement);

}

/*Jun.14,2003--sundy
字符串转换为数字(""-->0)as_type--str,num
参数说明:as_str--转换的字符串
         ai_digit--转换的小数位数(null--不限制小数位数,0--转换为整型,>0按小数位数转换)
         as_type--转换后返回的类型(null,"num"--转换为数字类型,"str"--转换为字符串(按小数格式化后的字符串)
例如:
gf_str2float("10.2124568795")返回float类型10.2124568795
gf_str2float("10.6",0)返回Int类型11(使用四舍五入的方法)
gf_str2float("10.2",2)返回float类型10.1
gf_str2float("10.2",2,"str")返回String类型"10.20"(按小数位数格式化字符串)
gf_str2float("10.216",2)返回float类型10.22
gf_str2float("10.216",2,"str")返回String类型"10.22"
*/
function gf_str2float(as_str,ai_digit,as_type)
{
   var fdb_tmp = 0;
   var fi_digit = 0;
   var fs_digit = "1";
   var fs_str = "" + as_str;
   var fs_tmp1 = "";
   var fs_tmp2 = "";
   var fi_pos = 0;
   var fi_len = 0;
   fdb_tmp = parseFloat(isNaN(parseFloat(fs_str))?0:fs_str);

   switch (true)
   {
      case (ai_digit==null)://不改变值,只转换为数字
         fdb_tmp = fdb_tmp;
         break;
      case (ai_digit==0)://取得整数
         fdb_tmp = Math.round(fdb_tmp);
         break;
      case (ai_digit>0)://按照传入的小数点位数四舍五入取值
         for (var i=0;i<ai_digit;i++) fs_digit +="0";
         fi_digit = parseInt(fs_digit);
         fdb_tmp = Math.round(fdb_tmp * fi_digit) / fi_digit;
         if (as_type=="str")
         {
            fs_tmp1 = fdb_tmp.toString();
            fs_tmp1 +=((fs_tmp1.indexOf(".")!=-1)?"":".") +
fs_digit.substr(1);
            fi_pos = fs_tmp1.indexOf(".") + 1 + ai_digit;
            fdb_tmp = fs_tmp1.substr(0,fi_pos);
         }
         break;
   }
   return fdb_tmp;

}

//打印数据
function gf_dgdprint(as_reportname,as_where,as_subtitle,as_footer)
{  //打印datagrid  --sherry 2003-08-19
   /*
   as_reportname--报表格式名  不能为空
   as_where--where 提取条件,形如" From cod_Driver Where Corp ='本单位' 不能为空

   as_subtitle --表头小标题
   as_footer--表尾,
   */
   var fs_Rpt_Property="width=" + (screen.width - 10) + ",height=" +
(screen.height - 55) + ",left=0,top=0";
if (as_reportname==null) as_reportname="";
if (as_where==null) as_where="";
if (as_subtitle==null) as_subtitle="";
if (as_footer==null) as_footer="";
var S_Rpt_ReportName=escape(as_reportname) ;
var S_Rpt_Where=escape(as_where) ;
var S_Rpt_SubTitle=escape(as_subtitle) ;
var S_Rpt_Footer=escape(as_footer) ;
var fs_parm = "";
fs_parm += "?S_Rpt_ReportName=" + S_Rpt_ReportName  ;
fs_parm += "&S_Rpt_Where=" + S_Rpt_Where ;
fs_parm += "&S_Rpt_SubTitle=" + S_Rpt_SubTitle ;
fs_parm += "&S_Rpt_Footer=" + S_Rpt_Footer  ;
   window.open( "../SysPublic/sys_printer.aspx" +
fs_parm,"sys_printer",fs_Rpt_Property );

}