/********************************************************************************* * EO_JSLib.js * javascript正则表达式检验 **********************************************************************************/ //校验是否全由数字组成 function isDigit(s) { var patrn=/^[0-9]{1,20}$/; if (!patrn.exec(s)) return false return true } //校验登录名:只能输入5-20个以字母开头、可带数字、"_"、"."的字串 function isRegisterUserName(s) { var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9]|[._]){4,19}$/; if (!patrn.exec(s)) return false return true } //校验用户姓名:只能输入1-30个以字母开头的字串 function isTrueName(s) { var patrn=/^[a-zA-Z]{1,30}$/; if (!patrn.exec(s)) return false return true } //校验密码:只能输入6-20个字母、数字、下划线 function isPasswd(s) { var patrn=/^(\\w){6,20}$/; if (!patrn.exec(s)) return false return true } //校验普通电话、传真号码:可以"+"开头,除数字外,可含有"-" function isTel(s) { //var patrn=/^[+]{0,1}(\\d){1,3}[ ]?([-]?(\\d){1,12})+$/; var patrn=/^[+]{0,1}(\\d){1,3}[ ]?([-]?((\\d)|[ ]){1,12})+$/; if (!patrn.exec(s)) return false return true } //校验手机号码:必须以数字开头,除数字外,可含有"-" function isMobil(s) { var patrn=/^[+]{0,1}(\\d){1,3}[ ]?([-]?((\\d)|[ ]){1,12})+$/; if (!patrn.exec(s)) return false return true } //校验邮政编码 function isPostalCode(s) { //var patrn=/^[a-zA-Z0-9]{3,12}$/; var patrn=/^[a-zA-Z0-9 ]{3,12}$/; if (!patrn.exec(s)) return false return true } //校验搜索关键字 function isSearch(s) { var patrn=/^[^`~!@#$%^&*()+=|\\\\\\][\\]\\{\\}:;\\'\\,.<>/?]{1}[^`~!@$%^&()+=|\\\\\\][\\]\\{\\}:;\\'\\,.<>?]{0,19}$/; if (!patrn.exec(s)) return false return true } function isIP(s) //by zergling { var patrn=/^[0-9.]{1,20}$/; if (!patrn.exec(s)) return false return true } /********************************************************************************* * FUNCTION: isBetween * PARAMETERS: val AS any value * lo AS Lower limit to check * hi AS Higher limit to check * CALLS: NOTHING * RETURNS: TRUE if val is between lo and hi both inclusive, otherwise false. **********************************************************************************/ function isBetween (val, lo, hi) { if ((val < lo) || (val > hi)) { return(false); } else { return(true); } } /********************************************************************************* * FUNCTION: isDate checks a valid date * PARAMETERS: theStr AS String * CALLS: isBetween, isInt * RETURNS: TRUE if theStr is a valid date otherwise false. **********************************************************************************/ function isDate (theStr) { var the1st = theStr.indexOf('-'); var the2nd = theStr.lastIndexOf('-'); if (the1st == the2nd) { return(false); } else { var y = theStr.substring(0,the1st); var m = theStr.substring(the1st+1,the2nd); var d = theStr.substring(the2nd+1,theStr.length); var maxDays = 31; if (isInt(m)==false || isInt(d)==false || isInt(y)==false) { return(false); } else if (y.length < 4) { return(false); } else if (!isBetween (m, 1, 12)) { return(false); } else if (m==4 || m==6 || m==9 || m==11) maxDays = 30; else if (m==2) { if (y % 4 > 0) maxDays = 28; else if (y % 100 == 0 && y % 400 > 0) maxDays = 28; else maxDays = 29; } if (isBetween(d, 1, maxDays) == false) { return(false); } else { return(true); } } } /********************************************************************************* * FUNCTION: isEuDate checks a valid date in British format * PARAMETERS: theStr AS String * CALLS: isBetween, isInt * RETURNS: TRUE if theStr is a valid date otherwise false. **********************************************************************************/ function isEuDate (theStr) { if (isBetween(theStr.length, 8, 10) == false) { return(false); } else { var the1st = theStr.indexOf('/'); var the2nd = theStr.lastIndexOf('/'); if (the1st == the2nd) { return(false); } else { var m = theStr.substring(the1st+1,the2nd); var d = theStr.substring(0,the1st); var y = theStr.substring(the2nd+1,theStr.length); var maxDays = 31; if (isInt(m)==false || isInt(d)==false || isInt(y)==false) { return(false); } else if (y.length < 4) { return(false); } else if (isBetween (m, 1, 12) == false) { return(false); } else if (m==4 || m==6 || m==9 || m==11) maxDays = 30; else if (m==2) { if (y % 4 > 0) maxDays = 28; else if (y % 100 == 0 && y % 400 > 0) maxDays = 28; else maxDays = 29; } if (isBetween(d, 1, maxDays) == false) { return(false); } else { return(true); } } } } /******************************************************************************** * FUNCTION: Compare Date! Which is the latest! * PARAMETERS: lessDate,moreDate AS String * CALLS: isDate,isBetween * RETURNS: TRUE if lessDate<moreDate *********************************************************************************/ function isComdate (lessDate , moreDate) { if (!isDate(lessDate)) { return(false);} if (!isDate(moreDate)) { return(false);} var less1st = lessDate.indexOf('-'); var less2nd = lessDate.lastIndexOf('-'); var more1st = moreDate.indexOf('-'); var more2nd = moreDate.lastIndexOf('-'); var lessy = lessDate.substring(0,less1st); var lessm = lessDate.substring(less1st+1,less2nd); var lessd = lessDate.substring(less2nd+1,lessDate.length); var morey = moreDate.substring(0,more1st); var morem = moreDate.substring(more1st+1,more2nd); var mored = moreDate.substring(more2nd+1,moreDate.length); var Date1 = new Date(lessy,lessm,lessd); var Date2 = new Date(morey,morem,mored); if (Date1>Date2) { return(false);} return(true); } /********************************************************************************* * FUNCTION isEmpty checks if the parameter is empty or null * PARAMETER str AS String **********************************************************************************/ function isEmpty (str) { if ((str==null)||(str.length==0)) return true; else return(false); } /********************************************************************************* * FUNCTION: isInt * PARAMETER: theStr AS String * RETURNS: TRUE if the passed parameter is an integer, otherwise FALSE * CALLS: isDigit **********************************************************************************/ function isInt (theStr) { var flag = true; if (isEmpty(theStr)) { flag=false; } else { for (var i=0; i<theStr.length; i++) { if (isDigit(theStr.substring(i,i+1)) == false) { flag = false; break; } } } return(flag); } /********************************************************************************* * FUNCTION: isReal * PARAMETER: heStr AS String decLen AS Integer (how many digits after period) * RETURNS: TRUE if theStr is a float, otherwise FALSE * CALLS: isInt **********************************************************************************/ function isReal (theStr, decLen) { var dot1st = theStr.indexOf('.'); var dot2nd = theStr.lastIndexOf('.'); var OK = true; if (isEmpty(theStr)) return false; if (dot1st == -1) { if (!isInt(theStr)) return(false); else return(true); } else if (dot1st != dot2nd) return (false); else if (dot1st==0) return (false); else { var intPart = theStr.substring(0, dot1st); var decPart = theStr.substring(dot2nd+1); if (decPart.length > decLen) return(false); else if (!isInt(intPart) || !isInt(decPart)) return (false); else if (isEmpty(decPart)) return (false); else return(true); } } /********************************************************************************* * FUNCTION: isEmail * PARAMETER: String (Email Address) * RETURNS: TRUE if the String is a valid Email address * FALSE if the passed string is not a valid Email Address * EMAIL FORMAT: AnyName@EmailServer e.g; webmaster@hotmail.com * @ sign can appear only once in the email address. *********************************************************************************/ function isEmail (theStr) { var atIndex = theStr.indexOf('@'); var dotIndex = theStr.indexOf('.', atIndex); var flag = true; theSub = theStr.substring(0, dotIndex+1) if ((atIndex < 1)||(atIndex != theStr.lastIndexOf('@'))||(dotIndex < atIndex + 2)||(theStr.length <= theSub.length)) { return(false); } else { return(true); } } /********************************************************************************* * FUNCTION: newWindow * PARAMETERS: doc -> Document to open in the new window hite -> Height of the new window wide -> Width of the new window bars -> 1-Scroll bars = YES 0-Scroll Bars = NO resize -> 1-Resizable = YES 0-Resizable = NO * CALLS: NONE * RETURNS: New window instance **********************************************************************************/ function newWindow (doc, hite, wide, bars, resize) { var winNew=_blank; var opt=toolbar=0,location=0,directories=0,status=0,menubar=0,; opt+=(scrollbars=+bars+,); opt+=(resizable=+resize+,); opt+=(width=+wide+,); opt+=(height=+hite); winHandle=window.open(doc,winNew,opt); return; } /********************************************************************************* * FUNCTION: DecimalFormat * PARAMETERS: paramValue -> Field value * CALLS: NONE * RETURNS: Formated string **********************************************************************************/ function DecimalFormat (paramValue) { var intPart = parseInt(paramValue); var decPart =parseFloat(paramValue) - intPart; str = ; if ((decPart == 0) || (decPart == null)) str += (intPart + .00); else str += (intPart + decPart); return (str); } ^\\\\d+$ //非负整数(正整数 + 0) ^[0-9]*[1-9][0-9]*$ //正整数 ^((-\\\\d+)|(0+))$ //非正整数(负整数 + 0) ^-[0-9]*[1-9][0-9]*$ //负整数 ^-?\\\\d+$ //整数 ^\\\\d+(\\\\.\\\\d+)?$ //非负浮点数(正浮点数 + 0) ^(([0-9]+\\\\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\\\\.[0-9]+)|([0-9]*[1-9][0-9]*))$ //正浮点数 ^((-\\\\d+(\\\\.\\\\d+)?)|(0+(\\\\.0+)?))$ //非正浮点数(负浮点数 + 0) ^(-(([0-9]+\\\\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\\\\.[0-9]+)|([0-9]*[1-9][0-9]*)))$ //负浮点数 ^(-?\\\\d+)(\\\\.\\\\d+)?$ //浮点数 ^[A-Za-z]+$ //由26个英文字母组成的字符串 ^[A-Z]+$ //由26个英文字母的大写组成的字符串 ^[a-z]+$ //由26个英文字母的小写组成的字符串 ^[A-Za-z0-9]+$ //由数字和26个英文字母组成的字符串 ^\\\\w+$ //由数字、26个英文字母或者下划线组成的字符串 ^[\\\\w-]+(\\\\.[\\\\w-]+)*@[\\\\w-]+(\\\\.[\\\\w-]+)+$ //email地址 ^[a-zA-z]+://(\\\\w+(-\\\\w+)*)(\\\\.(\\\\w+(-\\\\w+)*))*(\\\\?\\\\S*)?$ //url |
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常用JS函数
![](https://img2024.cnblogs.com/blog/35695/202408/35695-20240826070647288-243310440.jpg)