[code language=js]/**********************************************************************
* 常用JS驗證函式
* QQ:12165743
* Email:[email protected]
* Date:2007-06-06
**********************************************************************

使用說明:正確匹配返回true,否則返回false
----------------------------------------------------------------------
函式列表:
CheckInput() 控制元件驗證
IsLen() 判斷長度
IsUsername() 驗證使用者名稱
IsPassword() 驗證密碼
IsEn() 驗證是否為字母
IsCn() 驗證是否為漢字
IsEmail() 驗證E-mail
IsMSN() 驗證MSN
IsQQ() 驗證QQ號
IsHttpUrl() 驗證網址
IsDoMainName() 驗證域名
IsIpv4() 驗證IPV4地址
IsImgURL() 驗證圖片地址
IsCellPhone() 驗證手機號碼
IsPhone() 驗證固定電話
IsZipCode() 驗證郵編
IsIdCard() 驗證身份證號碼
IsDateFormat() 驗證日期格式YY-MM-DD
IsRangeTime() 驗證時間格式HH:MM:SS
IsMoney() 驗證金額格式
IsInt() 驗證數字，並判斷其範圍
IsSearch() 驗證關鍵字
-----------------------------------------------------------------------
使用例子:
<script language="javascript">
var email="username";
alert(email.IsEmail());
</script>

<input name="email" type="text" id="email" value="wqb7156#163.com" />
<div id="Megdiv"></div>
<script language="javascript">
if(!CheckInput("email","email","郵箱","notnull",'IsEmail',0,0,"Megdiv")) return flase;
</script>
----------------------------------------------------------------------*/
//控制元件驗證 CheckInput(Id,Name,Title,Null,Format, LengthMin, LengthMax,Megdiv)
function CheckInput()
{
var Id=arguments[0];
var Name=arguments[1];
var Title=arguments[2];
var Null=arguments[3].toLowerCase();
var Format=arguments[4]
var LengthMin=arguments[5]
var LengthMax=arguments[6];
var Megdiv=(arguments[7]==null)?Id+'_meg':arguments[7];

var obj=document.getElementById(Id);
var Name=document.getElementsByName(Name);
var value=obj.value.replace(/(^\s*)|(\s*$)/g, "");
var type=obj.type.toLowerCase();
var showdiv=document.getElementById(Megdiv);


//是否為空，如不為空判斷長度範圍
if(Null=='notnull')
{
switch(type){
//檔案域
case"file":
if( value=='' )
{
showdiv.innerHTML='×請選擇你要上傳的圖片';
obj.focus();
return false;
}
//文字框
case"text":
if( value=='' )
{
showdiv.innerHTML='×'+Title+'不能為空';
obj.focus();
return false;
}
break;
//文字域
case"textarea":
if( value=='' )
{
showdiv.innerHTML='×'+Title+'不能為空';
obj.focus();
return false;
}
break;
//密碼框
　case"password":
if( value=='' )
{
showdiv.innerHTML='×'+Title+'不能為空';
obj.focus();
return false;
}
//確認密碼
if(Id.substr(Id.length-2,2)=='re')
{
var pwd=Id.substr(0,Id.length-3);
if(document.getElementById(pwd).value!=value)
{
showdiv.innerHTML='×'+'兩次輸入的密碼不相同';
obj.focus();
return false;
}
}
break;
//單選按鈕
case"radio":
var flag=false;
for (var i=0;i<Name.length;i++)
{
if(Name.checked) flag=true;
//break;
}
if(!flag)
{
showdiv.innerHTML='×'+Title+'不能為空';
return false;
}
break;
//複選框
case"checkbox":
var flag=false;
for (var i=0;i<Name.length;i++)
{
if(Name.checked) flag=true;
//break;
}
if(!flag)
{
showdiv.innerHTML='×'+Title+'不能為空';
return false;
}
break;
//列表框
case"select-one":
if(obj.selectedIndex==0)
{
showdiv.innerHTML='×'+Title+'不能為空';
obj.focus();
return false;
}
break;
}
}else
{
//確認密碼
if(type=='password'&&Id.substr(Id.length-2,2)=='re')
{
var pwd=Id.substr(0,Id.length-3);
if(document.getElementById(pwd).value!=value)
{
showdiv.innerHTML='×'+'兩次輸入的密碼不相同';
obj.focus();
return false;
}
}
}
//長度判斷
if(value!=''&&!value.IsLen(LengthMin,LengthMax))
{
showdiv.innerHTML='×'+Title+'長度必須在'+LengthMin+'和'+LengthMax+'之間';
obj.focus();
return false;
}
//驗證資料格式
if(Format!='nocheck'&&value!='')
{
//選擇函式
switch(Format)
{
case "IsLen": Format=value.IsLen(); break;
case "IsUsername": Format=value.IsUsername(); break;
case "IsPassword": Format=value.IsPassword(); break;
case "IsEn": Format=value.IsEn(); break;
case "IsCn": Format=value.IsCn(); break;
case "IsEmail": Format=value.IsEmail(); break;
case "IsMSN": Format=value.IsMSN(); break;
case "IsQQ": Format=value.IsQQ(); break;
case "IsHttpUrl": Format=value.IsHttpUrl(); break;
case "IsDoMainName": Format=value.IsDoMainName(); break;
case "IsIpv4": Format=value.IsIpv4(); break;
case "IsImgURL": Format=value.IsImgURL(); break;
case "IsCellPhone": Format=value.IsCellPhone(); break;
case "IsPhone": Format=value.IsPhone(); break;
case "IsZipCode": Format=value.IsZipCode(); break;
case "IsIdCard": Format=value.IsIdCard(); break;
case "IsDateFormat": Format=value.IsDateFormat(); break;
case "IsRangeTime": Format=value.IsRangeTime(); break;
case "IsMoney": Format=value.IsMoney(); break;
case "IsInt": Format=value.IsInt(); break;
case "IsSearch": Format=value.IsSearch(); break;
}
if(!Format)
{
showdiv.innerHTML='×'+Title+'格式不正確';
obj.focus();
return false;
}
}
showdiv.innerHTML="√";
return true;
}

//判斷長度(長度不限為0)
String.prototype.IsLen = function()
{
var isRightFormat=false;
var minnum=arguments[0]?arguments[0]:0;
var maxnum=arguments[1]?arguments[1]:0;
isRightFormat = (minnum == 0 && maxnum ==0 ? true : (calculate_byte(this) >= minnum && calculate_byte(this) <= maxnum ? true : false));
return isRightFormat;
}

//驗證使用者名稱
String.prototype.IsUsername = function()
{
var myReg = /^[0-9a-zA-Z\-]+$/;
if(myReg.test(this)) return true;
return false;
}
//驗證密碼
String.prototype.IsPassword = function()
{
var myReg = /^[0-9a-zA-Z]+$/;
if(myReg.test(this)) return true;
return false;
}
//驗證是否為字母
String.prototype.IsEn = function()
{
var myReg = /^[a-zA-Z]+$/;
if(myReg.test(this)) return true;
return false;
}

//驗證是否為漢字
String.prototype.IsCn = function()
{
var myReg =/^[\u0391-\uFFE5]+$/;
if(myReg.test(this)) return true;
return false;
}

//驗證E-mail
String.prototype.IsEmail = function()
{
var myReg = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/;
if(myReg.test(this)) return true;
return false;
}

//驗證MSN
String.prototype.IsMSN = function()
{
var myReg = /([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/;
if(myReg.test(this)) return true;
return false;
}

//驗證QQ號碼
String.prototype.IsQQ = function()
{
var myReg =/^[1-9]\d{4,9}$/;
if(myReg.test(this)) return true;
return false;
}
//驗證網址
String.prototype.IsHttpUrl = function()
{
var myReg =/^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/;
if(myReg.test(this)) return true;
return false;
}

//驗證域名
String.prototype.IsDoMainName = function()
{
var myReg =/^[0-9a-zA-Z]([0-9a-zA-Z\-]+\.){1,3}[a-zA-Z]{2,4}?$/;
if(myReg.test(this)) return true;
return false;
}

//驗證IPV4地址
String.prototype.IsIpv4 = function()
{
var myReg =/^(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2}).(2[0-5]{2}|1?[0-9]{1,2})$/;
if(myReg.test(this)) return true;
return false;
}

//驗證圖片地址(不支援由CGI動態生成的圖片)
String.prototype.IsImgURL = function()
{
var myReg =/^\.(jpeg|jpg|gif|bmp|png|pcx|tiff|tga|lwf)$/;
if(myReg.test(this)) return true;
return false;
}

//驗證手機號碼
String.prototype.IsCellPhone = function()
{
var myReg =/^((\(\d{3}\))|(\d{3}\-))?1[3,5]\d{9}$/;
if(myReg.test(this)) return true;
return false;
}

//驗證固定電話
String.prototype.IsPhone = function()
{
var myReg =/^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$/;
if(myReg.test(this)) return true;
return false;
}

//驗證郵編
String.prototype.IsZipCode = function()
{
var myReg =/[0-9]{6}/;
if(myReg.test(this)) return true;
return false;
}

//驗證身份證號碼
String.prototype.IsIdCard = function()
{
var myReg =/(^([\d]{15}|[\d]{18}|[\d]{17}[xX]{1})$)/;
if(myReg.test(this)) return true;
return false;
}

//驗證日期格式YY-MM-DD
String.prototype.IsDateFormat = function()
{
var myReg =/^[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}$/;
if(myReg.test(this)) return true;
return false;
}

//驗證時間格式HH:MM:SS
String.prototype.IsRangeTime = function()
{
var myReg =/^(\d{2}):(\d{2}):(\d{2})$/;
if(myReg.test(this)) return true;
return false;
}

//驗證金額格式
String.prototype.IsMoney = function()
{
var myReg =/^[0-9]{1,8}[.]{0,1}[0-9]{0,2}$/;
if(myReg.test(this)) return true;
return false;
}

//字驗證數字格式並判斷數字的圍(min:最小值;max:最大值.)
String.prototype.IsInt = function()
{
var isRightFormat=false;
var minnum=arguments[0]?arguments[0]:0;
var maxnum=arguments[1]?arguments[1]:0;
var myReg =/^[-\+]?\d+$/;
if(myReg.test(this))
{
isRightFormat = (minnum == 0 && maxnum ==0 ? true : (this > minnum && this < maxnum ? true : false));
}
return isRightFormat;
}

//驗證搜尋關鍵字
String.prototype.IsSearch = function()
{
var myReg=/^[\|\"\'<>,.*&@#$;:!^()]/;
if(myReg.test(this)) return false;
return true;
}

//js準確計算字串長度
function calculate_byte( sTargetStr ) {
var sTmpStr, sTmpChar;
var nOriginLen = 0;
var nStrLength = 0;

sTmpStr = new String(sTargetStr);
nOriginLen = sTmpStr.length;

for ( var i=0 ; i < nOriginLen ; i++ ) {
sTmpChar = sTmpStr.charAt(i);

if (escape(sTmpChar).length > 4) {
nStrLength += 2;
} else if (sTmpChar!='\r') {
nStrLength ++;
}
}

return nStrLength;
}
[/code]