Easy question about Dates

[JayBuys]

It's been a while since I've used JavaScript since I write most of my stuff now in ASP with VBScript. However, I need to do something in JavaScript and I need a little help.

VBScript has a function called 'IsDate' which will return a boolean value indicating whether an expression can be converted to a valid date. This is great for validating form input before entering the information into a database, avoiding type mismatch errors.

Does JavaScript have an equivalent function? I haven't been able to find one in a quick search through any of my books. I figured it'd be easiest to just ask the experts. If there is a similar function can you tell me it's name or if there isn't does anyone have a simple date validation script?

Thanks in advance for your help.

 

[baad]

hi

what format do you mean? if you would say what format would you accept for your database input, i'm shure someone here would write a regular expression to validate it

as for a special function - it was long time ago when i watched the documentations last time, so, can't tell you if there is such a function (at least i don't remember one) Victor

 

[JayBuys]

YYYY-MM-DD is the format it would need to be in

 

[baad]

if those values are digits, here is a function:

function validate(obj){
//the expression:
var re=/^\d{4}\-\d{2}\-\d{2}$/
var str=obj.value
if (!str) {alert("enter something"obj.focus(); return false}
if (!str.match(re)){
alert("wrong date format, YYYY-MM-DD needed"
obj.focus();obj.select();return false;
}
}

& how to call it (one of the ways):
<input type=text name=thename onchange=&quot;validate(this)&quot;> Victor