我的Javascript

自己常用到的函数

//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<loadTimes) {
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("<font face='Arial' color='red' size='4'>Loading.....</font>");
}
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);
}
}

我的Javascript（二）

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 );
}

-----------------------------------------------------

/*进行消除字符串的空格*/
function Trim(str)
{
if(str.charAt(0) == " ")
{
str = str.slice(1);
str = Trim(str);
}
return str;
}
/*检查字符串是否是空值*/
function isEmpty(str)
{
var trimstr_value=Trim(str)
if(trimstr_value==""||trimstr_value==null)
{
return true
}
return false;
}
/*检查单个字符是否是数字*/
function isValidNum(str)
{
return ((str>=0)&&(str<=9));
}

/*检查字符串是否是数字类型*/
function isNumStr(str)
{
var i;
var leng=str.length;
for(i=0;i<leng;i++)
{
var vchar=str.substr(i,1);
if((vchar=="-")&&(i==0))
continue;
else if(!isValidNum(vchar))
return false;
}
return true;
}

/*检查输入的时间是否合法*/
function isValidData(str)
{
var str1=str.substr(0,4);
var str2=str.substr(5,2);
var str3=str.substr(8,2);
var str4=str.substr(11,2);
var str5=str.substr(14,2);

if(str1<1000||str1>9999)
return false;
if(str2<1||str2>12)
return false;
if(str3<1||str3>31)
return false;
if(str4<0||str4>23)
return false;
if(str5<0||str5>59)
return false;

return true;
}

/*将日期转换为格式日期形式 flag=0--为yyyy/mm/dd方式 1--yyyy-mm-dd 2--yyyymmdd*/
function ChangeDateType(datestr,flag)
{
var leng=datestr.length;
var str;

if(flag==0)
{
if(leng==10)
str=datestr.substr(0,4)+"/"+datestr.substr(5,2)+"/"+datestr.substr(8,2);
else if(leng==8)
str=datestr.substr(0,4)+"/"+datestr.substr(4,2)+"/"+datestr.substr(6,2);
else
return -1;
}
else if(flag==1)
{
if(leng==10)
str=datestr.substr(0,4)+"-"+datestr.substr(5,2)+"-"+datestr.substr(8,2);
else if(leng==8)
str=datestr.substr(0,4)+"-"+datestr.substr(4,2)+"-"+datestr.substr(6,2);
else
return -2;
}
else if(flag==2)
{
if(leng==10)
str=datestr.substr(0,4)+datestr.substr(5,2)+datestr.substr(8,2);
else if(leng==8)
str=datestr.substr(0,4)+datestr.substr(4,2)+datestr.substr(6,2);
else
return -3;
}
return str;
}

/*检查是否是正确的日期*/
function isDate(str)
{
var year,month,day;

if(str.length!=8&&str.length!=10)
return false;
str=ChangeDateType(str,0);
if(str.length!=10)
return false;

year=str.substr(0,4);
month=str.substr(5,2);
day=str.substr(8,2);

if(str.length<10)
return false;
if(year<1000)
return false;
if((month>12)||(month<1))
return false;
else
{
//先取得这个年月的日数
var today= new Date(Date.parse(str));
today=today.getDate();
if(today<day)
return false;
}
return true;
}

/*检查是否是正确的年月*/
function isDate1(str)
{
var year,month;

if(str.length<6)
return false;

year=str.substr(0,4);
month=str.substr(4,2);

if(year<1000)
return false;
if((month>12)||(month<1))
return false;

return true;
}

/*检查是否是正确的时间*/
function isTime(str)
{
var hour,minute,fgf;

hour=str.substr(0,2);
minute=str.substr(3,5);
fgf=str.substr(2,1);

if(str.length<5)
return false;
if(hour>=24||hour<0)
return false;
if(minute>59||minute<0)
return false;
if(fgf!=":")
return false;

return true;
}

/*检查是否是正确的年月4-22*/
function isMDate(str)
{
var year,month;
var leng=str.length;

if(!isNumStr(str))
return false;

if(leng==7)
{
year=str.substr(0,4);
month=str.substr(5,2);
}
else if(leng==6)
{
year=str.substr(0,4);
month=str.substr(4,2);
}
else
return false;

if(year<1000)
return false;
if((month>12)||(month<1))
return false;

return true;
}

/*输入只允许是数字*/
function numonly(field,event)
{
var key,keychar;
if(window.event)
key=window.event.keyCode;
else if(event)
key=event.which;
else
return true;

keychar=String.fromCharCode(key);

if((key==null)||(key==0)||(key==8)||(key==9)||(key==13)||(key==27))
return true;
else if((("0123456789").indexOf(keychar)>-1))
return true;
else
return false;
}

/*检测输入日期是星期几*/
function getWeek(str)
{
var day="";
var week="";

if(isEmpty(str))
return -1;
else
{
str=ChangeDateType(str,0);
var today= new Date(Date.parse(str));
week=today.getDay();

return week;
}
}

/*取得中文星期*/
function getcWeek(str)
{
var week=getWeek(str);
var weekday;

if(week=="0")
weekday="星期天";
else if(week=="1")
weekday="星期一";
else if(week=="2")
weekday="星期二";
else if(week=="3")
weekday="星期三";
else if(week=="4")
weekday="星期四";
else if(week=="5")
weekday="星期五";
else if(week=="6")
weekday="星期六";

return weekday;
}

/*取得中文星期*/
function getcWeek1(str)
{
var week=getWeek(str);
var weekday;

if(week=="0")
weekday="天";
else if(week=="1")
weekday="一";
else if(week=="2")
weekday="二";
else if(week=="3")
weekday="三";
else if(week=="4")
weekday="四";
else if(week=="5")
weekday="五";
else if(week=="6")
weekday="六";

return weekday;
}

/*取得某日期指定日后的日期*/
function getNDate(datestr,day)
{
var str;
datestr=ChangeDateType(datestr,0);
var today= new Date(Date.parse(datestr));

str=today.getFullYear()+"/"+(today.getMonth()+1)+"/"+(today.getDate()+Number(day));
var ndate=new Date(Date.parse(str));
var nmonth=ndate.getMonth()+1;
var nday=ndate.getDate();
var nyear=ndate.getFullYear();
if(nmonth<10)
nmonth="0"+nmonth;
if(nday<10)
nday="0"+nday;

redate=nyear+"-"+nmonth+"-"+nday;
return redate;
}
/*取得某日期指定日前的日期*/
/*
function getPDate(datestr,day)
{
var str;
datestr=ChangeDateType(datestr,0);
var today= new Date(Date.parse(datestr));

str=today.getFullYear()+"/"+(today.getMonth()+1)+"/"+(today.getDate()-Number(day));
var pdate=new Date(Date.parse(str));
var pmonth=ndate.getMonth()+1;
var pday=ndate.getDate();
var pyear=pdate.getFullYear();
if(pmonth<10)
pmonth="0"+pmonth;
if(pday<10)
pday="0"+pday;

redate=pyear+"-"+pmonth+"-"+pday;
return redate;
}
*/

/*取得某日期下个月的日期*/
function getNMonth(datestr,i)
{
var str;
datestr=ChangeDateType(datestr,0);
var redate;

var year=datestr.substr(0,4);
var month=datestr.substr(5,2);
var day=datestr.substr(8,2);

if(month==12)
redate=(Number(year)+1)+"-01"+"-"+day;
else
{
month=Number(month)+i;
if(month<10)
month="0"+month;
redate=year+"-"+month+"-"+day;
}
return redate;
}
/*取得某月的月底*/
function getLastDay(datestr)
{
var str;
datestr=ChangeDateType(datestr,0);
var redate;

datestr=datestr.substr(0,8)+"01";
//取得30天后的日期
str=getNDate(datestr,30);

var day=str.substr(8,2);
if(day=="31")
redate=datestr.substr(0,8)+day;
else if(day=="01")
redate=datestr.substr(0,8)+"30";
else if(day=="02")
redate=datestr.substr(0,8)+"29";
else if(day=="03")
redate=datestr.substr(0,8)+"28";

redate=ChangeDateType(redate,1);
return redate;
}
/*检查是否为金额字符串*/
function isMoneyStr(str)
{
str=Trim(str);
if(isEmpty(str))
return false;

var str1;
var dotnum=0;
//进行检测
for(i=0;i<str.length;i++)
{
str1=str.substr(i,1);
//检测是否为负
if(i==0)
{
if((str1!="-")&&(!isValidNum(str1)))
return false;
}
else
{
if((str1!=".")&&(!isValidNum(str1)))
return false;
if(str1==".")
dotnum++;
if(dotnum>1)
return false;
}
}
return true;
}

/*取得字符cstr在str中出现得次数*/
function getAppearNum(str,cstr)
{
var leng=str.length;
var count=0;
var i;

for(i=0;i<leng;i++)
{
if((str.substr(i,1))==cstr)
count++;
}

return count;
}

/*取得字符*/
function getSubStr(str,cstr,si,ei)
{
var restr="";
var leng=str.length;
var count=0;
var sp=0;
var ep=0;
var i;

if(si==0)
sp=1;

for(i=0;i<leng;i++)
{
if((str.substr(i,1))==cstr)
count++;

if(count==si&&count>0&&sp==0)
sp = i+1;
if(count==ei&&count>0)
{
ep = i;
break;
}
}
if(ei>count)
ep=leng;

var getl=ep-sp;
if(sp==1)
restr=str.substr(sp-1,(getl+1));
else
restr=str.substr(sp,getl);

return restr;
}

/*检测ip地址*/
/**************************************
函数名称:checkIP(str)
函数功能:检测文本框的值(IP地址)是否符合IP地址的格式.
返回值:boolean 类型.IP格式正确返回"TRUE",IP格式不正确返回"FALSE".
**************************************/
function checkIP(ipstr)
{
var count=getAppearNum(ipstr,".");
var str1="",str2="",str3="",str4="";
if(count!=3)
return false;

str1=getSubStr(ipstr,".",0,1);
if(!isNumStr(str1))
return false;
else
{
if(Number(str1)>255||Number(str1)<0)
return false;
if(str1.substr(0,1)=='0'&&str1.length>1)
return false;
}
str2=getSubStr(ipstr,".",1,2);
if(!isNumStr(str2))
return false;
else
{
if(Number(str2)>255||Number(str2)<0)
return false;
if(str2.substr(0,1)=='0'&&str2.length>1)
return false;
}
str3=getSubStr(ipstr,".",2,3);
if(!isNumStr(str3))
return false;
else
{
if(Number(str3)>255||Number(str3)<0)
return false;
if(str3.substr(0,1)=='0'&&str3.length>1)
return false;
}
str4=getSubStr(ipstr,".",3,4);
if(!isNumStr(str4))
return false;
else
{
if(Number(str4)>255||Number(str4)<0)
return false;
if(str4.substr(0,1)=='0'&&str4.length>1)
return false;
}

return true;
}

/*计算总金额*/
function CalZje(num,dj)
{
if(isEmpty(num)||isEmpty(dj))
return "";
if(!isMoneyStr(num)||!isMoneyStr(dj))
return "";

var zje;
zje=Number(num)*Number(dj);
return zje;
}

/*将日期格式转换成短格式*/
function ToShortDate(daystr)
{
var daystr1=ChangeDateType(daystr,0); //转换成yyyy/mm/dd形式
var year,month,day;
var datestr;
year=daystr1.substr(0,4);
month=daystr1.substr(5,2);
day=daystr1.substr(8,2);

if(Number(month)<10)
month=month.substr(1,1);
if(Number(day)<10)
day=day.substr(1,1);

datestr=month+"/"+day+"/"+year;

return datestr;
}

/*取得两个日期之间的天数*/
function getDayNum(sdate,edate)
{
var sdate1,edate1;
var sday,eday;
var days;
sdate1=ToShortDate(sdate);
edate1=ToShortDate(edate);
sday=Date.parse(sdate1);
eday=Date.parse(edate1);

days=(eday-sday)/(86400000);
return days;
}

/*取得两个日期之间的年*/
function GetYearN(sdate,edate)
{
var years;
var syear=sdate.substr(0,4);
var eyear=edate.substr(0,4);
years=eyear-syear;
return years;
}

/*取得两个日期之间的月*/
function GetMonthN(sdate,edate)
{
var years,months,months1;
var syear=sdate.substr(0,4);
var eyear=edate.substr(0,4);
var smonth=sdate.substr(5,2);
var emonth=edate.substr(5,2);
years=eyear-syear;
months=emonth-smonth;
months1=years*12+months;
return months1;
}