Another Use of CF code in Javascript

scripter73 · Mar 21, 2002

Hi,

I want to use the CF function IsDate() in a Javascript.
IsDate() should accept a dynamic JS date variable.

Here's what I have:

<head>
<title>Untitled</title>

<script>
//declare global variables to pass back to CF
var date1;
var date2;

function todayDate(date, old)
{
var f = new Date(date);
var n = new Date(old);

//populate global JS vars with dates
date1 = f;
date2 = n;

if ((f > n))
{
alert("Good date.&quot

;
}
else
{
alert("Bad date.&quot

;;
}

}

todayDate("01/02/2000", "01/01/2001&quot

;

//verify the date is valid
var verifyvalue = "<cfoutput>#IsDate(01/01/2001)#</cfoutput>";
alert ("Verify value is " + verifyvalue);
</script>
</head>

IsDate() works fine when I hard-code a date, but if I say:

var verifyvalue = "<cfoutput>#IsDate(f)#</cfoutput>";

I receive an error. Any ideas?

Any help's appreciated.

Thanks,
scripter73
Change Your Thinking, Change Your Life.

twcman · Mar 21, 2002

As far as I know, you can not access js variables with CF like you are trying to do. CF is server side and is looking for the value of f on the server side before the js can give it a value after reaching the client side.
If you are using this in a form, you could do the js validation of f<n with an onsubmit event then when the form action page is loaded do the date. Otherwise you could go a google.com search on "javascript isdate()" and find a ton of js date validators. The only dumb questions are the ones that are never asked

RayDance · Mar 22, 2002

Just use this for example:

<cfoutput>
<script>
var verifyvalue = '#IsDate(DE(FORM.f))#';
</script>
</cfoutput>

IsDate is asking for a String so u can use DE(), or Evaluate(), that depends on what sort off variable f is.

give it a try.

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Another Use of CF code in Javascript

scripter73

Programmer

twcman

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RayDance

Programmer

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