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Verifies Valid Time
Description
This function verifies that a string is a valid time, in the form hh:mm:ss am/pm, where seconds are optional. It accepts military time (hour between 0 and 23) as long as am/pm isn't specified. It requires am/pm when the hour is less than or equal to 12. ...View A Script Demo
This function verifies that a string is a valid time, in the form hh:mm:ss am/pm, where seconds are optional. It accepts military time (hour between 0 and 23) as long as am/pm isn't specified. It requires am/pm when the hour is less than or equal to 12. ...View A Script Demo
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="TextPad 4.4">
<LINK href="general.css" rel="stylesheet" type="text/css">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Sandeep Tamhankar (stamhankar@hotmail.com) -->
<!-- Web Site: http://207.20.242.93 -->
<!-- Begin
function IsValidTime(timeStr) {
// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.
var timePat = /^(\d{1,2}):(\d{2})(:(\d{2}))?(\s?(AM|am|PM|pm))?$/;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
alert("Time is not in a valid format.");
return false;
}
hour = matchArray[1];
minute = matchArray[2];
second = matchArray[4];
ampm = matchArray[6];
if (second=="") { second = null; }
if (ampm=="") { ampm = null }
if (hour < 0 || hour > 23) {
alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
return false;
}
if (hour <= 12 && ampm == null) {
if (confirm("Please indicate which time format you are using. OK = Standard Time, CANCEL = Military Time")) {
alert("You must specify AM or PM.");
return false;
}
}
if (hour > 12 && ampm != null) {
alert("You can't specify AM or PM for military time.");
return false;
}
if (minute<0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
}
if (second != null && (second < 0 || second > 59)) {
alert ("Second must be between 0 and 59.");
return false;
}
return false;
}
// End -->
</script>
</HEAD>
<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<form name=timeform onSubmit="return IsValidTime(document.timeform.time.value);">
Time (HH:MM:SS AM/PM format) <input type=text name=time><br>
<input type="submit" value="Submit">
</form>
</center>
</BODY>
</HTML>
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="TextPad 4.4">
<LINK href="general.css" rel="stylesheet" type="text/css">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Sandeep Tamhankar (stamhankar@hotmail.com) -->
<!-- Web Site: http://207.20.242.93 -->
<!-- Begin
function IsValidTime(timeStr) {
// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.
var timePat = /^(\d{1,2}):(\d{2})(:(\d{2}))?(\s?(AM|am|PM|pm))?$/;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
alert("Time is not in a valid format.");
return false;
}
hour = matchArray[1];
minute = matchArray[2];
second = matchArray[4];
ampm = matchArray[6];
if (second=="") { second = null; }
if (ampm=="") { ampm = null }
if (hour < 0 || hour > 23) {
alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
return false;
}
if (hour <= 12 && ampm == null) {
if (confirm("Please indicate which time format you are using. OK = Standard Time, CANCEL = Military Time")) {
alert("You must specify AM or PM.");
return false;
}
}
if (hour > 12 && ampm != null) {
alert("You can't specify AM or PM for military time.");
return false;
}
if (minute<0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
}
if (second != null && (second < 0 || second > 59)) {
alert ("Second must be between 0 and 59.");
return false;
}
return false;
}
// End -->
</script>
</HEAD>
<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<form name=timeform onSubmit="return IsValidTime(document.timeform.time.value);">
Time (HH:MM:SS AM/PM format) <input type=text name=time><br>
<input type="submit" value="Submit">
</form>
</center>
</BODY>
</HTML>
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