"Rizyak" <ry**********@l atitude47.comAN DMETOO> wrote in message news:<ca******* ***@nntp1.u.was hington.edu>...
I have a form for a user to input an establishment's hours and what time an
event is taking place. After the user inputs their establishment's hours of
operation I want the form elements lower in the form to adjust so that an
event can only happen when the place is open.
Here is one approach to validating the event times:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Verify time fields</title>
<script type="text/javascript">
// ------------------------------------------
function validateAll()
{
alert("in validateAll");
var x = document.forms["myForm"];
var inputOK;
if( x.storeOpen.val ue == "" )
{
alert("Enter a store open time.");
inputOK= false;
}
else if( x.storeClose.va lue == "" )
{
alert("Enter a store close time.");
inputOK= false;
}
else if( x.eventStart.va lue == "" )
{
alert("Enter an event start time.");
inputOK= false;
}
else if( x.eventEnd.valu e == "" )
{
alert("Enter an event stop time.");
inputOK= false;
}
else
{
inputOK = checkBoth();
}
alert("from validateAll. inputOK = " + inputOK);
return inputOK;
}
// ............... ...............
function checkBoth()
{
alert("In checkBoth...");
var x = document.forms["myForm"];
var inputOK;
// Convert the times in string format to numeric format
// in minutes.
var storeOpen = convertTime(x.s toreOpen.value) ;
var storeClose = convertTime(x.s toreClose.value );
var eventStart = convertTime(x.e ventStart.value );
var eventEnd = convertTime(x.e ventEnd.value);
alert(".storeOp en.value = " + x.storeOpen.val ue +
" storeOpen = " + storeOpen +
"\n .storeClose.val ue = " + x.storeClose.va lue +
" storeClose = " + storeClose +
"\n .eventStart.val ue = " + x.eventStart.va lue +
" eventStart = " + eventStart +
"\n .eventEnd.value = " + x.eventEnd.valu e +
" eventEnd = " + eventEnd );
if ( eventStart > eventEnd )
{
alert("Event start must be before " +
"or equal to event end.");
x.eventStart.fo cus();
inputOK = false;
}
else if ( !isBetween(even tStart,storeOpe n,storeClose) )
{
alert("Event start must occur " +
"when the store is open.");
x.eventStart.fo cus();
inputOK = false;
}
else if ( !isBetween(even tEnd,storeOpen, storeClose) )
{
alert("Event end must occur " +
"when the store is open.");
x.eventEnd.focu s();
inputOK = false;
}
else
{
inputOK = true;
}
return inputOK;
}
// ............... ............... .......
function convertTime(tim eString)
{
//Convert to a minute based value.
//Input may either be in 24 hour format
// or am/pm format.
// Examples 8:00am, 8, 8:12, 14:30, 2:30pm, or 4:30P.M.
var theTime = parseInt(timeSt ring,10) * 60;
if ( timeString.inde xOf("p") >= 0 ||
timeString.inde xOf("P") >= 0 )
{
theTime += 12*60;
}
var minutesIndex = timeString.inde xOf(":");
if ( minutesIndex >= 0 )
{
var minutes = timeString.subs tr(minutesIndex +1);
theTime += parseInt(minute s,10);
}
return theTime;
}
// ............... ............... ........
function isBetween(test, a,b)
{
return test>=a && test<=b;
}
</script>
</head>
<body>
<p>Please try out our form.</p>
<form name="myForm"
action="http://www.notavalidwe baddress.com"
method="POST"
onSubmit="retur n validateAll();" >
<p>Store start time:<br>
<input type="text" name="storeOpen " size="20"><br>< br>
Store end time:<br>
<input type="text" name="storeClos e" size="20"><br>
</p>
<p>The little event times.</p>
<p>Event start time:<br>
<input type="text" name="eventStar t" size="40">
<p>Event end time<br>
<input type="text" name="eventEnd" size="40">
</p>
<p><input type="submit" border="0" value="Submit">
</form>
</body>
</html>
Robert
