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Date Difference 1
- Thread starter TMRO
- Start date
-
1
- #2
here's an test example of what you're looking for:
-kaht
Code:
<html>
<head>
<script language=javascript>
function dateCompare(date1, date2) {
date1 = new Date(Date.parse(date1)).getTime();
date2 = new Date(Date.parse(date2)).getTime();
datediff = ((date1 - date2) < 0) ? (date2 - date1) : (date1 - date2);
if (datediff > 5184000000) {
alert("dates are greater than 60 days apart");
}
else {
alert("dates are less than 60 days apart");
}
}
</script>
</head>
<body>
<form name=blahForm>
<input type=text name=date1>date1<br>
<input type=text name=date2>date2<br>
<input type=button value='compare dates' onclick='dateCompare(blahForm.date1.value, blahForm.date2.value)'>
</form>
</body>
</html>-kaht
BillyRayPreachersSon
Programmer
Not being one to turn down a chance to introduce people to methods they may not have used before (learning new stuff is always fun!), here's an alternative way of doing the following:
Code:
datediff = ((date1 - date2) < 0) ? (date2 - date1) : (date1 - date2);It could be replaced with this:
Code:
datediff = Math.abs(date1 - date2);Math.abs effectively removes any negative sign in front of the number, giving you the absolute value. This means that regardless of whether date1 is smaller or bigger than date2, the result will always be a positive number.
Just another way of achieving the same result!
Dan
just a thought but if you ever turn these dates into a full date and time the single instruction (?? not at home right now) to produce a string like
"Wed Oct 20 15:16:59 UTC+0100 2004 "
can differ on browsers. Opera uses the full day and month word. My solution to avoid this instruction is in the code for this page
"Wed Oct 20 15:16:59 UTC+0100 2004 "
can differ on browsers. Opera uses the full day and month word. My solution to avoid this instruction is in the code for this page
Thanks for the tip Dan. To be completely honest, it never even crossed my mind to use the abs method, which is sad considering that's exactly what I needed. I have just trained myself to use the ? operator for everything lately. Any time I write code that is presented with a "if blah then this or that" situation I always try to write it using the ? operator, especially when assigning a value to a variable (like above).
-kaht
-kaht
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