程序代码
/**
* JavaScript 检查库
* @author Jarry.li
* @version 2.01
* @last modify time 2003/09/11
* #@ validate.js
* 第一类 检查并返回检查结果(true or false)
* a-1. ifDigit(str,allowNull); 是否为合法非负整数(examples/ifDigit.html)
* a-2. ifLetter(str,allowNull) 是否为英文字母
* a-3. ifExist(arr,element);某个元素是否存在于某个数组中
* a-4. ifDay(str,allowNull);是否为天数
* a-5. ifMonth(str,allowNull); 是否为月份
* a-6. ifYear(str,allowNull)是否为年份
* a-7. ifYearInRange(str,min_year,max_year,allowNull); 是否为指定范围内的合法年份
* a-8. ifDate(String,allowNull)是否为日期
* a-9. ifEmail(String,allowNull); 是否为邮件地址
* a-10. ifPhone(String,allowNull); 是否为电话号码
* a-11. ifGBK(String,allowNull);是否包含中文字符
* a-12.ifMoney(String,allowNull); 是否为合法货币数字
* a-13 ifMoneyInRange(String,int,int,allowNull) 判断字符串是否为合法钱数,且是否超过限定范围
* a-14. ifAvildDate(year,month,day) 判断是否为合法日期
* a-15. ifSelectedButton(buttonGroup) 判断buttongroup为名的一组radio中有无被选中的项

* 第二类 检查后直接报错
* b-1. isDigit(Object,allowNull); 是否为数字
* b-2. isDigitInMaxLen(object,maxlength,allowNull) 是否为非负整数，且长度在指定范围内
* b-3. isDigitInRange(object,minValue,maxValue,allowNull) 是否为非负整数，且大小在指定范围内
* b-4. isLetter(Object,allowNull) 是否为字母
* b-5. isDay(Object,allowNull);是否为天数
* b-6. isMonth(Object,allowNull); 是否为月份
* b-7. isYear(Object,allowNull)是否为年份
* b-8. isYearInRange(object,min_year,max_year,allowNull) 是否为指定范围内的合法年份
* b-9. isDate(Object,allowNull)是否为日期
* b-10. isEmail(Object,allowNull); 是否为邮件地址
* b-11. isPhone(Object,allowNull); 是否为电话号码
* b-12. isGBK(Object,allowNull);是否为中文字符
* b-13. isMoney(Object,allowNull); 是否为合法货币数字
* b-14. isMoneyInRange(object,minValue,maxValue,allowNull) 判断是否合法钱数且是否超过限定额度
* b-15. isLengthInRange(Object, min, max,allowNull) 字符串长度是否在指定长度范围内
* b-16. checkValidDate(yyObject,mmObject,ddObject,allowNull) 对日期进行全面的检查
* b-17. checkValidDateRange(yyObject1,mmObject1,ddObject1,allowNull1,yyObject2,mmObject2,ddObject2,allowNull2)
*; 检查起始日期及截止日期
* b-15. showMsg(String, Object); 显示提示信息String,光标焦点落在Object上,返回false

* 第三类 功能函数，并不报错
* c-1. getLength(String); 获取字符长度（每个中文字符为2个字符）
* c-2. trim(String); 去掉字符串前后的空格并返回
* c-3. textsTrim(formname) 将form中所有的text文本进行trim操作。

*///日期数组
arr_day=new Array("1","2","3","4","5","6","7","8","9","10",
"11","12","13","14","15","16","17","18","19","20",
"21","22","23","24","25","26","27","28","29","30","31",
"01","02","03","04","05","06","07","08","09");

//月份数组
arr_mon=new Array("1","2","3","4","5","6","7","8","9","10","11","12",
"01","02","03","04","05","06","07","08","09");

//建立者:jiarry@hotmail.com
//判断字符串是否为合法非负整数
// a-1 ifDigit(str,allowNull)
function ifDigit(str,allowNull){
slen=str.length;
if(slen==0) return allowNull;
for (i=0; i<slen; i++){
cc = str.charAt(i);
if (cc <"0" || cc >"9"){
return false;
}
}
return true;
}

//建立者:jiarry@hotmail.com
//功能:判断字符串是否都是英文字母
// a-2 ifLetter(str,allowNull)
function ifLetter(str,allowNull ){
slen=getLength(str);
if (slen==0) return allowNull;

str = str.toUpperCase();
for ( var i = 0 ; i < slen; i ++ ){
if ( str.charAt(i) < "A" || str.charAt(i) > "Z" )
return false;
}
return true;
}

//建立者:jiarry@hotmail.com
//功能:判断某个元素是否存在于数组中
//a-3 ifExist(arr,element) arr:数组；element:某个元素
function ifExist(arr,element){
for(var i=0;i<arr.length;i++){
if(element==arr[i]) return true;
}
return false;
}

//建立者:jiarry@hotmail.com
//功能:判断是否为合法天数
//a-4 ifDay(str,allowNull)
function ifDay(str,allowNull){
slen=getLength(str);
if (slen==0) return allowNull;
return ifExist(arr_day,str);
}

//建立者:jiarry@hotmail.com
//功能:判断是否为合法月份
//a-5 ifMonth(str,allowNull)
function ifMonth(str,allowNull){
slen=getLength(str);
if (slen==0) return allowNull;
return ifExist(arr_mon,str);
}

//建立者:jiarry@hotmail.com
//功能:判断是否为合法年份(要求是四位整数，且数字>=1800 并且<=2050)
//a-6 ifYear(str,allowNull)
function ifYear(str,allowNull){
return ifYearInRange(str,1800,2050,allowNull);
}

//建立者:jiarry@hotmail.com
//功能:判断是否为合法年份(要求是四位整数，且数字>=min_year 并且<=max_year)
//a-7 ifYearInRange(str,min_year,max_year,allowNull)
function ifYearInRange(str,min_year,max_year,allowNull){
slen=getLength(str);
if (slen==0) return allowNull;
if (slen!=4) return false;
if (!ifDigit(str,allowNull)) return false;
if (parseInt(str)<min_year || parseInt(str)>max_year) return false;
return true;
}

//建立者:jiarry@hotmail.com
//功能:判断是否为合法日期格式(要求是八位整数，格式为"yyyymmdd")
//a-8 ifDate(str,allowNull)
function ifDate(str,allowNull){
/*
slen=getLength(str);
if(slen==0) return allowNull;
if(slen!=8) return false;
if(!ifDigit(str,false)) return false;

var year = str.substr(0,4);
if(!ifYear(year,false)) return false;

var month= str.substr(4,2);
if(!ifMonth(month,false)) return false;

var day= str.substr(6,2);
if(!ifDay(day,false)) return false;

if(!ifAvildDate(year,month,day)) return false;
return true;
*/
/*slen=getLength(str);
if(slen==0) return allowNull;
if(slen!=10) return false;

var year = str.substr(0,4);
if(!ifYear(year,false)) return false;
var s = str.substr(4,1);
if(s!="-") return false;

var month= str.substr(5,2);
if(!ifMonth(month,false)) return false;

var s = str.substr(7,1);
if(s!="-") return false;

var day= str.substr(8,2);
if(!ifDay(day,false)) return false;

if(!ifAvildDate(year,month,day)) return false;
return true; */
slen=getLength(str);
if(slen==0) return allowNull;
if(slen<8 || slen>10) return false;
var year = str.substr(0,4);
if(!ifYear(year,false)) return false;
var s = str.substr(4,1);
if(s!="-") return false;
str = str.substr(5);
var pos = str.indexOf("-");
if(pos == -1) return false;
var month = str.substring(0,pos);
if(!ifMonth(month,false)) return false;
var day = str.substr(pos + 1);
if(!ifDay(day,false)) return false;
var yearint = parseInt(year);
var monthint = parseInt(month);
var dayint = parseInt(day);
if(yearint%4 == 0)
{;
if(monthint==2 && dayint>29) return false;
}
else
{
if(monthint==2 && dayint>28) return false;
}

return true;
}

//建立者:jiarry@hotmail.com
//判断字符串是否为合法邮件地址
// a-9 ifEmail(str,allowNull)
function ifEmail(str,allowNull){
if(str.length==0) return allowNull;
i=str.indexOf("@");
j=str.lastIndexOf(".");
if (i == -1 || j == -1 || i > j) return false;
return true;
}

//建立者:jiarry@hotmail.com
//判断url是否为正确的恶地址;
//0-9,a-z
function validateURL(url){
//validateURL
if(url.search(/^[A-Za-z0-9 -]+.[A-Za-z0-9]+[/=?%-&_~`@[]':+!]*([^<>""])*$/)!=0){
return false;
//}else if(url.substring(0,4)=="www."){
//网址不要前面的www.，如果没用的话可以注释掉;
//return false;
}else{
return true;
}
}

//建立者:jiarry@hotmail.com
//判断字符串是否为合法电话号码
// a-10 ifPhone(str,allowNull)
function ifPhone(str,allowNull){
slen=getLength(str);
if (slen==0) return allowNull;
for (i=0; i<slen; i++){
cc = str.charAt(i);
if ((cc <"0" || cc >"9") && cc != "-" && cc!="+" && cc!="(" && cc !=")" && cc !="/"){
return false;
}
}
return true;
}

//建立者：jiarry@hotmail.com
//判断字符串是否为合法手机号码
function ifMobile(str,allowNull){
slen=getLength(str);
if(slen==0) return allowNull;
if(slen!=11) return false;
if(!ifDigit(str,allowNull))
return false;
if(str.substring(0,2) != '13')
return false;
if(str.charAt(2)=='2')
return false;
return true;
}
/*
建立者：lichunping at 2004-03-24;;

判断字符串是否为中国移动手机号码
*/
function ifChinaMobilePhone(PhoneNumber,allowNull);
{;
if ( ifMobile(PhoneNumber,allowNull) );
{;
if(getLength(PhoneNumber) == 0 ) return allowNull;;
if( PhoneNumber.charAt(2)>='4' && PhoneNumber.charAt(2)<='9')return true;;
};
return false ;;
};

//建立者:jiarry@hotmail.com;
//判断字符串是否包含中文字符;
// a-11 ifGBK(str,allowNull);
function ifGBK(str,allowNull){;
for(var i=0;i<str.length;i++){;
var rstr=escape(str.substring(i,i+1));;
if (rstr.substring(0,2)=="%u"){;
return true;;
};
};
return false;;
};

//建立者:jiarry@hotmail.com;
//判断单双字节的长度;
// 设str某输入框内的值，若是双字节则长度多增加一个;;
function bytes(str){;
if(typeof(str)!='string'){;
str = str.value;;
};
var len = 0;;
for(var i = 0; i < str.length; i++){;
if(str.charCodeAt(i) > 127){;
len++;;
};
len++;;
};
return len;;
};

//建立者:jiarry@hotmail.com;
//限制最大字符输入，若输入框里的字符长度超出则提示;
//判断单双字节;;
// countLength(object);
function countLength(maxLen,obj);
{;
var dLen = 0,sLen = 0, msg = "";;
for(i=0; i< obj.length; i++ ){;
if(obj.charCodeAt(i) > "0" && obj.charCodeAt(i) < "128"){;
sLen+=1;;
}else{;
dLen+=2;;
};
};
totalLen = sLen+dLen;;
overLen = totalLen-maxLen;;
if( totalLen > maxLen){;
msg = ("最多" + maxLen + "字符( "+ (maxLen/2) +"个汉字)，您超出了" + overLen + "个字符，请修改。");;
};
return msg;;
};
//建立者:jiarry@hotmail.com;
//限制最大字符输入，若输入框里的字符长度超出则提示;
//判断单双字节;;
// countLength(object);
maxLen=100;;
function countLength(o);
{;
var dLen;;
var sLen;;
dLen=0;sLen=0;;
for(i=0;i<o.value.length;i++){;
if(o.value.charCodeAt(i) > "0" && o.value.charCodeAt(i) < "128"){;
sLen+=1;;
}else{;
dLen+=2;;
};
};
tLen=sLen+dLen;;
lNum=tLen-maxLen;;
if(tLen>maxLen){;
alert("注意，消息最多"+maxLen+"字符！n您超出了"+lNum+"个字符，不能继续输入！");;
};
};
//建立者:jiarry@hotmail.com;
//判断字符串是否为合法钱数;
// a-12 ifMoney(String);
function ifMoney(str,allowNull){;
if (str.length==0) return allowNull;;

if ( ( pos = str.indexOf( "." ) ) != -1 ){;
if (str.length==1);
return false;;

if ( ( pos = str.indexOf(".", pos + 1) ); != -1 );
return false;;
};

for ( var i = 0 ; i < str.length; i ++ ){;
if (( str.charAt(i) < "0" || str.charAt(i) > "9" )&&(str.charAt(i)!="."));
return false;;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//判断字符串是否为合法钱数,且是否在限定范围内;
// a-13 ifMoneyInRange(str,minValue,maxValue,allowNull);
function ifMoneyInRange(str,minValue,maxValue,allowNull){;
if (str.length==0) return allowNull;;
if(!ifMoney(str)) return false;;
if(parseFloat(str)>maxValue) return false;;
if(parseFloat(str)<minValue) return false;;
return true;;
};

//建立者:jiarry@hotmail.com;
//判断是否为合法日期;
// a-14 ifAvildDate(year,month,day);
function ifAvildDate(year,month,day){;
if((month==4||month==6||month==9||month==11) && day>30){;
return false;;
}else if(month==2){;
if(year % 4 >0 && day>28){;
return false;;
}else if(day>29){;
return false;;
};
}else if(day>31){;
return false;;
};
return true;;;;
};

//建立者:jiarry@hotmail.com;
//判断buttongroup为名的一组radio,checkbox中有无被选中的项;
// a-15 ifSelectedButton(buttonGroup);
function ifSelectedButton(buttonGroup){;
if(typeof buttonGroup=="undefined") return false;;

if(typeof buttonGroup.length=="undefined"){;
if(buttonGroup.checked) return true;;
return false;;
};

for (var i=0;i<buttonGroup.length;i++){;
if (buttonGroup[i].checked) return true;;
};
return false;;
};

//建立者:jiarry@hotmail.com;
//功能: 检查字段长度是否在指定范围内;
//示例: ifLengthInRange(form1.t1, 4,10,false);
//输入参数: 需要检查的表单对象名称，最小长度，最大长度;
//输出参数: true or false;
// a-16 ifLengthInRange(obj, min, max,allowNull);
function ifLengthInRange(obj, min, max,allowNull){;
//obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return false;;
return true;;
};

if (slen < min) return false;;
if (slen > max) return false;;
return true;;
};


//建立者:jiarry@hotmail.com;
//功能: 检查是否为非负整数;
//示例: isDigit(String,allowNull);
//输入参数: 需要检查的表单对象名称;
//输出参数: true或出错信息;
// b-1 isDigit(Object,allowNull);
function isDigit(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个不小于0的整数.",obj);;
return true;;
};
for (i=0; i<slen; i++){;
cc = obj.value.charAt(i);;
if (cc <"0" || cc >"9") return showMsg("输入不合要求，必须为不小于0的整数.",obj);;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//功能: 检查是否为非负整数，并且长度不超过指定限制;
//示例: isDigitInMaxLen(String obj,int length,boolean allowNull);
//输入参数: 需要检查的表单对象名称,允许的最大长度;
//输出参数: true或出错信息;
// b-2 isDigitInMaxLen(Object,maxlength,allowNull);
function isDigitInMaxLen(obj,maxlength,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull);
return showMsg("必须输入一个长度不超过"+maxlength+"的整数.",obj);;
return true;;
};
if(slen>maxlength) return showMsg("长度超过限制，最大长度为"+maxlength+".",obj);;
for (i=0; i<slen; i++){;
cc = obj.value.charAt(i);;
if (cc < "0" || cc > "9") return showMsg("输入不合要求，必须为不小于0的整数.",obj);;
};
return true;;
};

//b-3 isDigitInRange(object,minValue,maxValue,allowNull);
function isDigitInRange(obj,minVal,maxVal,allowNull){;
obj.value=trim(obj.value);;
if(obj.value.length==0){;
if(!allowNull);
return showMsg("必须输入一个大小在"+minVal+" - "+maxVal+"之间的整数.",obj);;
return true;;
};
if(!isDigit(obj,false)) return false;;
if(obj.value<minVal);
return showMsg("输入的数值太小，最小值为"+minVal,obj);;
if(obj.value>maxVal);
return showMsg("输入的数值太大，最大值为"+maxVal,obj);;
return true;;
};

//建立者:jiarry@hotmail.com;
//功能:判断字符串是否都是字母;
//b-4 isLetter(Object,allowNull);
function isLetter(obj,allowNull){;
obj.value=trim(obj.value);;
str = obj.value;;
slen=getLength(str);;
if ( slen == 0 ){;
if(!allowNull) return showMsg("必须有输入值.",obj);;
return true;;
};
str = str.toUpperCase();;
for ( var i = 0 ; i < slen; i ++ ){;
if ( str.charAt(i) < "A" || str.charAt(i) > "Z" ) return showMsg("输入的必须都是英文字母.",obj);;
};
return true;;
};

//b-5 isDay(Object,allowNull);
function isDay(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合法日期(01~31).",obj);;
return true;;
};
if (!ifDigit(obj.value)) return false;;
if (obj.value < "01" || obj.value > "31"){;
return showMsg("日格式有误，正确的格式为：DD(01~31),如:02",obj);;
};
return true;;
};

// b-6 isMoneth(Object,allowNull);
function isMonth(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合法月份(01~12).",obj);;
return true;;
};
if (!ifDigit(obj.value)) return false;;
if(slen!=2) return showMsg("必须输入两位数字(01~12).",obj);;
if (obj.value < "01" || obj.value > "12"){;
return showMsg("月份格式有误，正确的格式为：MM(01~12),如:01",obj);;
};
return true;;
};

//建立者：默认;
//功能：检查是否合法年份;
//示例：isYear(Object,allowNull);
//输入参数：被检查字符串;
//输出参数：true 或 错误信息;
// b-7 isYear(Object,allowNull);
function isYear(obj,allowNull){;
return isYearInRange(obj,1800,2050,allowNull);;
};


// b-8 isYearInRange(object,min_year,max_year,allowNull);
function isYearInRange(obj,min_year,max_year,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合法年份("+min_year+"~"+max_year+").",obj);;
return true;;
};
if (slen!=4) return showMsg("输入的年份不合要求,请输入一个合理年份("+min_year+"~"+max_year+").",obj);;
if (!ifDigit(obj.value,false)) return showMsg("输入的年份不合要求,请输入一个合理年份("+min_year+"~"+max_year+").",obj);;
if (parseInt(obj.value)<min_year || parseInt(obj.value)>max_year);
return showMsg("输入的年份不合要求,请输入一个合理年份("+min_year+"~"+max_year+").",obj);;
return true;;
}
//建立者：jiarry@hotmail.com
//功能：检查是否合法日期;
//示例：isDate(Object);
//输入参数：被检查字符串;
//输出参数：true 或 错误信息;
// b-9 isDate(Object);
function isDate(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合法日期，格式为YYYYMMDD,如19990102",obj);;
return true;;
};

if (!ifDigit(obj.value)){;
return showMsg("日期输入格式有误，不能含有非数字的字符.",obj);;
}else if (slen < 8){;
return showMsg("日期输入格式有误，正确的格式为：YYYYMMDD,如:19990102",obj);;
};
year = obj.value.substr(0,4);;
if(!ifYear(year,false)) return showMsg("日期中年份输入不合理，应在1800~2050之间.",obj);;
month = obj.value.substr(4,2);;
if(!ifMonth(month,false)) return showMsg("日期中月份输入不合理，应在01~12之间.",obj);;
day = obj.value.substr(6,2);;
if(!ifDay(day,false)) return showMsg("日期中日子输入不合理，应在01~31之间.",obj);;
if(!ifAvildDate(year,month,day)) return showMsg("输入的日期不存在.",obj);;
return true;;
};

//b-10 isEmail(Object);
function isEmail(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合理的邮件地址.",obj);;
return true;;
};

i=obj.value.indexOf("@");;
j=obj.value.lastIndexOf(".");;
// if (! ifGBK(obj)) i = -1;;
if (i == -1 || j == -1 || i > j) return showMsg("邮件地址输入不合理.",obj);;
return true;;
};

// b-11 isPhone(Object);
function isPhone(obj,allwoNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allwoNull) return showMsg("必须输入一个合理的电话号码.",obj);;
return true;;
};

for (i=0; i<slen; i++){;
cc = obj.value.charAt(i);;
if ((cc <"0" || cc >"9") && cc != "-" && cc!="+" && cc!="(" && cc !=")" && cc !="/"){;
return showMsg("电话号码含有非法字符.",obj);;
};
};
return true;;
};

// b-12 isGBK(Object,allowNull);
function isGBK(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个字串.",obj);;
return true;;
};
for(var i=0;i<obj.value.length;i++){;
var rstr=escape(obj.value.substring(i,i+1));;
if (rstr.substring(0,2)=="%u"){;
return true;;
};
}; http://bizhi.knowsky.com/
return showMsg("输入的字串中没有中文字符",obj);;
};

//建立者:jiarry@hotmail.com;
//判断字符串是否为合法钱数;
// b-13 isMoney(Object,allowNull);
function isMoney(obj,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合理钱数.",obj);;
return true;;
};

if (ifMoney(obj.value,false)){;
return true;;
}else{;
return showMsg("不是合理的钱数.",obj);;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//判断是否合法钱数且是否超过限定额度;
//b-14 isMoneyInRange(obj,minValue,maxValue);
function isMoneyInRange(obj,minValue,maxValue,allowNull){;
obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须输入一个合理钱数.",obj);;
return true;;
};

if(!ifMoneyInRange(obj.value,minValue,maxValue,false)){;
return showMsg("输入的钱数不合理，要求值在"+minValue+"~"+maxValue+"之间.",obj);;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//功能: 检查字段长度是否在指定范围内;
//示例: isLengthInRange(form1.t1, 4,10);
//输入参数: 需要检查的表单对象名称，最小长度，最大长度;
//输出参数: true;
// b-15 isLengthInRange(obj, min, max,allowNull);
function isLengthInRange(obj, min, max,allowNull){;
//obj.value=trim(obj.value);;
slen=getLength(obj.value);;
if(slen==0){;
if(!allowNull) return showMsg("必须有输入值.",obj);;
return true;;
};

if (slen < min) return showMsg("请至少输入 " + min + " 个字符.",obj);;
if (slen > max) return showMsg("请最多输入 " + max + " 个字符.",obj);;
return true;;
};


//建立者:jiarry@hotmail.com;
//功能:全选或取消全选form里的checkbox，参数1即为全选,否则即取消;;
function checkall(obj,parm){//全选or取消全选;;
for(var i=0;i<obj.elements.length;i++){;
if(obj.elements[i].tagName.toLowerCase()=="input" && obj.elements[i].type=="checkbox"){;
if(parm==1){//check all checkbox input;;
obj.elements[i].checked=true;;
}else{;
obj.elements[i].checked=false;;
};

};
};
};

//建立者:jiarry@hotmail.com;
//功能:反选form里的checkbox;;
function reverseCheck(obj){;
for(var i=0;i<obj.elements.length;i++){;
if(obj.elements[i].tagName.toLowerCase()=="input" && obj.elements[i].type=="checkbox"){;
obj.elements[i].checked = obj.elements[i].checked ? false : true;;
};
};
};

//建立者:jiarry@hotmail.com;
//功能:判断form里的元素是否已经有child这样的值;;
//更多限制可以通过element的tagName,type,name等来判断;;
function isExistElement(child,obj){;
for(var i=0;i<obj.elements.length;i++){;
//if(obj.elements[i].tagName.toLowerCase()=="input" && obj.elements[i].type=="checkbox"){;
if(obj.elements[i].value==child)return true;;
//};
};
return false;;
};

//建立者:jiarry@hotmail.com;
//功能:对日期进行全面的检查;
//输入参数:yyObject:年的object;mmObject:月的object;ddObject:日的object;;
//输入参数:allowNull:true允许日期为空;false:必须选择日期;
//输出参数:ture of false;;
// b-16 checkValiDate(mmObject,ddObject,yyObject,allowNull);
function checkValidDate(yyObject,mmObject,ddObject,allowNull){;
if(allowNull){;
if(!(((!yyObject.options[0].selected)&&(!mmObject.options[0].selected)&&(!ddObject.options[0].selected)) || ((yyObject.options[0].selected)&&(mmObject.options[0].selected)&&(ddObject.options[0].selected))));
return showMsg("日期必须全部选择或者全部不选择!",yyObject);;
}else{;
if(yyObject.options[0].selected){;
return showMsg("请选择日期的年!",yyObject);;
};
if(mmObject.options[0].selected){;
return showMsg("请选择日期的月!",mmObject);;
};
if(ddObject.options[0].selected){;
return showMsg("请选择日期的日!",ddObject);;
};
};

if(!yyObject.options[0].selected){;
var my_year=yyObject[yyObject.selectedIndex].value;;
var my_month=mmObject[mmObject.selectedIndex].value;;
var my_day=ddObject[ddObject.selectedIndex].value;;

if(!ifAvildDate(my_year,my_month,my_day));
return showMsg("选择的日期不合法!",ddObject);;
};
return true;;
};


//建立者:jiarry@hotmail.com;
//功能:对日期进行全面的检查;
//输入参数:yyObject1:其始年的object;mmObject1:其始月的object;ddObject1:其始日的object;;
//输入参数:allowNull1:起始日期true允许日期为空;false:必须选择日期;
//输入参数:yyObject2:截止年的object;mmObject2:截止月的object;ddObject2:截止日的object;;
//输入参数:allowNull2:截止日期true允许日期为空;false:必须选择日期;
//输出参数:ture of false;;
// b-17 checkValidDateRange(mmObject1,ddObject1,yyObject1,allowNull1,mmObject2,ddObject2,yyObject2,allowNull2);
function checkValidDateRange(yyObject1,mmObject1,ddObject1,allowNull1,yyObject2,mmObject2,ddObject2,allowNull2){;
if(!checkValidDate(mmObject1,ddObject1,yyObject1,allowNull1)) return false;;
if(!checkValidDate(mmObject2,ddObject2,yyObject2,allowNull2)) return false;;

if((!yyObject1.options[0].selected) && (!yyObject2.options[0].selected)){;
date1=new Date(yyObject1-1900,mmObject1-1,ddObject1);;
date2=new Date(yyObject2-1900,mmObject2-1,ddObject2);;
if(date1>date2){;
return showMsg("起始日期不能大于截止日期.",yyObject1);;
};
};
return true;;
};


//建立者:jiarry@hotmail.com;
//功能:显示提示信息Msg,光标焦点落在Obj上,返回false;
//;;主要用于检查必要字段是否正确;
//示例:showMsg("用户名不能为空.",myform.username);
//输入参数:Msg(提示信息) Obj(光标焦点对象);
//输出参数:false;
// b-18 showMsg(String, Object);
function showMsg(Msg, Obj){;
alert( Msg );;
Obj.focus();;
return false;;
};

//建立者:jiarry@hotmail.com;
//功能:显示提示信息Msg,光标焦点落在Obj上;
//;;主要用于检查必要字段是否正确;
//示例:showMsg2("用户名不能为空.",myform.username);
//输入参数:Msg(提示信息) Obj(光标焦点对象);
//输出参数:false;
// b-19 showMsg2(String, Object);
function showMsg2(Msg, Obj){;
alert( Msg );;
Obj.focus();;
return;;
};

/**
以下是第三类
*/
//建立者:jiarry@hotmail.com;
//加入了汉字的长度判断;
// c-1 getLength(String);
function getLength(str){;
var templen=str.length;;
if(navigator.appName=='Netscape') return templen;;
for(var i=0;i<str.length;i++){;
var rstr=escape(str.substring(i,i+1));;
if (rstr.substring(0,2)=="%u"){;
templen++;;
};
};
return templen;;
}
//建立者:jiarry@hotmail.com;
//功能:去掉字符串前后的空格并返回;
//输入参数:inputStr(待处理的字符串);
//输出参数:inputStr(处理后的字符串);
// c-2 trim(String);
function trim(inputStr){;
var result = inputStr;;
while (result.substring(0,1) == " ") {;
result = result.substring(1,result.length);;
};

while (result.substring(result.length-1, result.length) == " ") {;
result = result.substring(0, result.length-1);;
};

return result;;
};

//建立者:jiarry@hotmail.com;
//功能:去掉字符串前后的空格并返回;
//输入参数:inputStr(待处理的字符串);
//输出参数:inputStr(处理后的字符串);
// c-2 string.trim();;
String.prototype.trim = function();
{;
return this.replace(/(^s*)|(s*$)/g, "");;
};

//Trim,参数String;
function trim(myStr);
{;
var pos1=-1;;
var pos2=-1;;
for(var i=0;i<myStr.length;i++){;
if(myStr.charAt(i)!=' ' && pos1<0) pos1=i;;
if(myStr.charAt(myStr.length-i-1)!=' ' && pos2<0) pos2=myStr.length-i;;
};
if(pos1<0 || pos2 <0) return("");;
return(myStr.substring(pos1,pos2));;
};

function trim(s);
{;
if (s == null);
{;
return s;;
};
var i;;
var beginIndex = 0;;
var endIndex = s.length - 1;;

for (i=0; i<s.length; i++);
{;
if (s.charAt(i) == ' ' || s.charAt(i) == '　');
{;
beginIndex++;;
};
else
{;
break;;
};
};
for (i = s.length - 1; i >= 0; i--);
{;
// if (s.charAt(i) == ' ' || s.charAt(i) == '　' || s.charAt(i)=='r' || s.charAt(i)=='n');

if (s.charAt(i) == ' ' || s.charAt(i) == '　');
{;
endIndex--;;
};
else
{;
break;;
};
};
if (endIndex < beginIndex);
{;
return "";;
};
return s.substring(beginIndex, endIndex + 1);;
};
//建立者:jiarry@hotmail.com;
//功能:将form中所有的text文本进行trim操作。;
//输入参数:myform(form名);
//输出参数:无;
// c-3 textTrim(form名称);
function textsTrim(myform){;
for(var i=0;i<myform.elements.length;i++){;
var etype=myform.elements[i].type;;
if(etype = "text"){;
myform.elements[i].value=trim(myform.elements[i].value);;
};
};
};


//建立者:jiarry@hotmail.com;
//功能:将form某一input框或textarea里的内容copy至粘贴板;
//输入参数:myform(input对象名称);
//输出参数:无;
function copyCode(obj) {;
var rng = document.body.createTextRange();;
rng.moveToElementText(obj);;
rng.scrollIntoView();;
rng.select();;
rng.execCommand("Copy");;
rng.collapse(false);;
};

//建立者:jiarry@hotmail.com;
//功能:以HTML页面方式运行某一input或textarea里的内容//firefox下可能不支持;
//输入参数:myform(input对象名称);
//输出参数:无;
function runCode(obj) {;
var winname = window.open('', "_blank", '');;
winname.document.open('text/html', 'replace');;
winname.document.writeln(obj.value);;
winname.document.close();;
};

//建立者:jiarry@hotmail.com;
//功能:将form某一input框或textarea里的内容另存为//firefox下可能不支持;
//输入参数:myform(input对象名称);
//输出参数:无;
function saveCode(obj) {;
var winname = window.open('', '_blank', 'top=10000');;
winname.document.open('text/html', 'replace');;
winname.document.writeln(obj.value);;
winname.document.execCommand('saveas','','code.htm');;
winname.close();;
};


//建立者:jiarry@hotmail.com;
//功能:相当于java里的replaceAll，可以替换字符里的包含的某个全部字符串;
//输入参数:被替换的字符串与要替换的字符串;
//输出参数:无;
String.prototype.replaceAll = strReplace;;
function strReplace(findText, replaceText) {;
var str = new String(this);;
while (str.indexOf(findText)!=-1) {;
str = str.replace(findText, replaceText);;
};
return str;;
};
String.prototype.replaceAll = strreplace;;
function; strreplace( str1, str2 ){;
return this.replace( new RegExp( str1,"g" ), str2);;
};
//正则表达式全部替换字符，与tempStr.replaceAll()相当;;

//建立者:jiarry@hotmail.com;
//功能:将form某一textarea里的内容里的br清除;将回车替换成<br />之类;
//输入参数:myform(input对象名称);
//输出参数:无;
function cleanBR() {;
var area = document.getElementsByTagName('TEXTAREA');;
for (var i=0; i<area.length; i++) {;
area[i].value = area[i].value.replace(/<br />/ig, '');;
area[i].value = area[i].value.replace(/(xA0x20){4}/ig, 't');;
area[i].value = area[i].value.replace(/xA0x20xA0/ig, '');;
area[i].value = area[i].value.replace(/xA0xA0/ig, '; ');;
};
};

//建立者:jiarry@hotmail.com;
//功能:将属性rel为blank的链接用window.open()的方式打开。;
//比如<a href="#" rel="blank"></a>;
//输入参数:myform(input对象名称);
//输出参数:无;
function tBlank(){;
var aLinks=document.getElementsByTagName("a");;
for (var i=0;i<aLinks.length;i++){;
if(aLinks[i].getAttribute("rel")=="blank"){;
//alert(aLinks[i].getAttribute("href"));;
aLinks[i].target="_blank";;
};
};
};


//建立者:jiarry@hotmail.com;
//功能:检查和设置数字;
//比如<a href="#" rel="nubmer"></a>;
//输入参数:myform(input对象名称);
//输出参数:无;
function setNum(){;
var inp= document.getElementsByTagName("input");;
//alert(inp.length);;
for(var i=0;i<inp.length;i++){;
if(inp[i].getAttribute("rel")=="number"){;
// checkNum(inp[i]);;
//inp[i].onmouseover=;
eval("checkNum(inp[i])");;
//alert(inp[i].value);;
//inp[i].onblur=eval (alert("d"));;
};
};
};

//建立者:jiarry@hotmail.com;
//功能:验证是否为数字与isNaN()相反;
//输出参数:返回true或者false;
function isNum(obj){;
for(var i=0; i < obj.value.length;i++){;
if(obj.value.charAt(i)<"0" || obj.value.charAt(i)>"9"){;
return false;;
};
}
return true;;
};

//建立者:jiarry@hotmail.com;
//正则表达式去除左右空格。;
//返回去除后的字符串;
function trim(s) {;
return s.replace( /^s*/, "" ).replace( /s*$/, "" );;
};

//建立者:jiarry@hotmail.com;
//正则表达式Email的验证;
//验证是否含有@.等;
function validateEmail(email){;
var myReg = /^[_a-z0-9]+@([_a-z0-9]+.)+[a-z0-9]{2,3}$/;;
if(myReg.test(email)==false){;
return false;;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//正则表达式电话的验证;
//验证是否含有@.等;
function validatePhone(phone){;
var myReg = /(^[0-9]{3,4}-[0-9]{5,8}$)|(^[0-9]{5,12}$)|(^([0-9]{3,4})[0-9]{5,8}$)|(^0{0,1}13[0-9]{9}$)/;;
if(myReg.test(phone)==false){;
return false;;
};
return true;;
};

//建立者:jiarry@hotmail.com;
//验证字符长度是否超出某个值;
//返回true或false;
function validateMaxLength(v, maxlen){;
if (trim(v).length > maxlen){;
return false;;
};
return true;;
}
/*
检查18位身份证最后一位即校验码是否正确
Author:lichunping@baidu.com;jarryli@gmail.com;
homepage:http://jiarry.126.com;
bolg:http://jiarry.blogchina.com;
1，∑(a[i]*W[i]) mod 11 ( i = 2, 3, , 18 ) (1) ;
2，加权因子分别为 Wi: 7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2 ；
3，将前17位号码分别乘以各自的加权因子,再求和除以11,再取余数。
4，用余数对应下方的校验码
5，Y余数:; 0 1 2 3 4 5 6 7 8 9 10 ;
6，校验码: 1 0 X 9 8 7 6 5 4 3 2 ;
*/
var ai=new Array();//用户的身份证号码数组;;
var wi=[7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2];//17位数对应的加权因子，自左至右;;
var yi=[0,1,2,3,4,5,6,7,8,9,10];//余数;;
var vi=["1","0","X","9","8","7","6","5","4","3","2"];//余数对应的校验码;;
var r;//最终的校验码;;
var sum;//和;
var y;//余数;

//用法:getVerifyCode(this.form.number);
//返回正确的验证码;;
function getVerifyCode(num){//17位的号码请求，则可以返回检验码;;
r=0;y=0;sum=0;;
var v=num;;
if( typeof(num) != "undefined" && typeof(num) != "string" && num.type == "text" ) v = num.value;;
v=v.toUpperCase();var vl;;
if(v.length==18);
vl=v.length-1;;
else
vl=v.length;;
if(vl!=17);
{;
alert("请求号码不正确");return;;
};
for(var i=0;i<vl;i++){;
ai[i]=v.charAt(i);;
sum+=ai[i]*wi[i];//身份证号码分别乘以加权因子再求和;;;;
};
y=sum%11;
r=vi[y];//校验码中的第y个即时校验码;;
return r;//返回18位身份证的校验码;;
};

//用法:checkIdVerifyCode(this.form.number);
//返回true或false;;
function checkIdVerifyCode(o){;
var v = o;;
if( typeof(o) != "undefined" && typeof(o) != "string" && o.type == "text" )v=o.value;;
var num18 = v.substr(17,1);;
/*//号码验证不一定需要;
var num17 = v.substring(0,17);
if(v.length != 18){
//alert("请输入18位身份证号码");
return false;
}else if(!isNaN(v)){
//alert("18位全是数字");
}else if( num18.toUpperCase() == "X" && !isNaN( num17 )){
//alert("第18位数字是X，前17位是数字");
}else{
//alert("请输入有效的身份证号码");
return false;
}*/
if(getVerifyCode(v) == num18);
return true;;
else
return false;;
};

// get absolute Left position;
//建立者:jiarry@hotmail.com;
//返回对象位于窗口的绝对左边距离;
function getAbsoluteLeft( ob ){;
if(!ob){return null;};
var obj = ob;;
var objLeft = obj .offsetLeft;;
while( obj != null && obj .offsetParent != null && obj .offsetParent.tagName != "BODY" ){;
objLeft += obj .offsetParent.offsetLeft;;
obj = obj .offsetParent;;
};
return objLeft ;;
};

// get absolute TOP position;
//建立者:jiarry@hotmail.com;
//返回对象位于窗口的绝对上边距离;
function getAbsoluteTop( ob ){;
if(!ob){return null;};
var obj = ob;;
var objTop = obj .offsetTop;;
while( obj != null && obj .offsetParent != null && obj .offsetParent.tagName != "BODY" ){;
objTop += obj .offsetParent.offsetTop;;
obj = obj .offsetParent;;
};
return objTop ;;
};

// get absolute TOP position;
//建立者:jiarry@hotmail.com;
//检查颜色值是否为真;;
//用法: if( isAllNum16("#000000") )alert("合法颜色");;
function isNum16(ch);
{;
if (ch >= '0' && ch <= '9')return true;;
if (ch >= 'A' && ch <= 'F')return true;;
if (ch >= 'a' && ch <= 'f')return true;;
return false;;
};
function isAllNum16(str1);
{//判断颜色值。除第一个字符#外的任一个值是否大于等a,A,0,小于等于f,F,9，否则报错。;
for (i=1; i<str1.length; i++) {;
if (!isNum16(str1.charAt(i)));
{;
return false;;
};
};
return true;;
};

/**
* Read the JavaScript cookies tutorial at:
*http://www.netspade.com/articles/javascript/cookies.xml
*/

/**
* Sets a Cookie with the given name and value.
*
* name;;;;Name of the cookie
* value;;;Value of the cookie
* [expires]; Expiration date of the cookie (default: end of current session)
* [path];;Path where the cookie is valid (default: path of calling document)
* [domain]Domain where the cookie is valid
*;;;(default: domain of calling document)
* [secure]Boolean value indicating if the cookie transmission requires a
*;;;secure transmission
*/
function setCookie(name, value, expires, path, domain, secure);
{//时间，域名，路径等可以根据需要来设定;
//var path="/";;
//var domain="baidu.com";;
var expdate = new Date();;
expdate.setTime(expdate.getTime() + (365*24*120));//设为1年时效;
expires = expdate;;

document.cookie= name + "=" + escape(value) +;
((expires) ? "; expires=" + expires.toGMTString() : "") +;
((path) ? "; path=" + path : "") +;
((domain) ? "; domain=" + domain : "") +;
((secure) ? "; secure" : "");;
};

function readCookie(name) {;
//http://www.quirksmode.org/js/cookies.html#link7;
var nameEQ = name + "=";;
var ca = document.cookie.split(';');;
for(var i=0;i < ca.length;i++) {;
var c = ca[i];;
while (c.charAt(0)==' ') c = c.substring(1,c.length);;
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);;
};
return null;;
};
/**
* Gets the value of the specified cookie.
*
* name; Name of the desired cookie.
*
* Returns a string containing value of specified cookie,
*or null if cookie does not exist.
*/
function getCookie(name);
{;
var dc = document.cookie;;
var prefix = name + "=";;
var begin = dc.indexOf("; " + prefix);;
if (begin == -1);
{;
begin = dc.indexOf(prefix);;
if (begin != 0) return null;;
};
else
{;
begin += 2;;
};
var end = document.cookie.indexOf(";", begin);;
if (end == -1);
{;
end = dc.length;;
};
return unescape(dc.substring(begin + prefix.length, end));;
};

/**
* Deletes the specified cookie.
*
* name;;;name of the cookie
* [path];path of the cookie (must be same as path used to create cookie)
* [domain]; domain of the cookie (must be same as domain used to create cookie)
*/
function deleteCookie(name, path, domain);
{;
if (getCookie(name));
{;
document.cookie = name + "=" +;
((path) ? "; path=" + path : "") +;
((domain) ? "; domain=" + domain : "") +;
"; expires=Thu, 01-Jan-70 00:00:01 GMT";;
};
}

标签： 函数