Date Validation in JScript
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Is there any function that would tell me if some date is correct or not. I have distinct year, month and day variables and i would like to call some function that would take all these parameters. If e.g month would be 14 , than function should somehow let me know that the date is not correct. The same if I enter 34 for day or 31 if february month is set... , etc. Thanx for any suggestions Michal Januszczyk
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Is there any function that would tell me if some date is correct or not. I have distinct year, month and day variables and i would like to call some function that would take all these parameters. If e.g month would be 14 , than function should somehow let me know that the date is not correct. The same if I enter 34 for day or 31 if february month is set... , etc. Thanx for any suggestions Michal Januszczyk
PHP has a date function like that, but AFAIK JavaScript doesn't. But it wouldn't be hard to emulate that function. I'm drinking triples, seeing double and acting single :cool:
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Is there any function that would tell me if some date is correct or not. I have distinct year, month and day variables and i would like to call some function that would take all these parameters. If e.g month would be 14 , than function should somehow let me know that the date is not correct. The same if I enter 34 for day or 31 if february month is set... , etc. Thanx for any suggestions Michal Januszczyk
Try this date validation script, I found on the net /** * DHTML date validation script for dd/mm/yyyy. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/) */ // Declaring valid date character, minimum year and maximum year var dtCh= "/"; var minYear=1900; var maxYear=2100; function isInteger(s){ var i; for (i = 0; i < s.length; i++){ // Check that current character is number. var c = s.charAt(i); if (((c < "0") || (c > "9"))) return false; } // All characters are numbers. return true; } function stripCharsInBag(s, bag){ var i; var returnString = ""; // Search through string's characters one by one. // If character is not in bag, append to returnString. for (i = 0; i < s.length; i++){ var c = s.charAt(i); if (bag.indexOf(c) == -1) returnString += c; } return returnString; } function daysInFebruary (year){ // February has 29 days in any year evenly divisible by four, // EXCEPT for centurial years which are not also divisible by 400. return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 ); } function DaysArray(n) { for (var i = 1; i <= n; i++) { this[i] = 31 if (i==4 || i==6 || i==9 || i==11) {this[i] = 30} if (i==2) {this[i] = 29} } return this } function isDate(dtStr){ var daysInMonth = DaysArray(12) var pos1=dtStr.indexOf(dtCh) var pos2=dtStr.indexOf(dtCh,pos1+1) var strDay=dtStr.substring(0,pos1) var strMonth=dtStr.substring(pos1+1,pos2) var strYear=dtStr.substring(pos2+1) strYr=strYear if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1) if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1) for (var i = 1; i <= 3; i++) { if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1) } month=parseInt(strMonth) day=parseInt(strDay) year=parseInt(strYr) if (pos1==-1 || pos2==-1){ alert("The Delivery Date format should be : dd/mm/yyyy") return false } if (strMonth.length<1 || month<1 || month>12){ alert("Please enter a valid Delivery Month") return false } if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){ alert("Please enter a valid Delivery Day") return false } if (strYear.length != 4 || year==0 || yearmaxYear){ alert("Please enter a valid 4 digit Delivery Year between "+minYear+" and "+maxYear) return false } if (