validating dates in the format DD-MON-YY

[hendryk]

Hi,
I want to be able to validate a date as the user types it into a textfield. The date must be in the format DD-MON-YY
i.e 20-MAY-02. Does anybody know the code to do this?

Katie

[x_goose_x]

Pretty simple. Just searches for the - . Any good or do you want more?

<script>
function ver_date() {
thedate = document.form1.mydate.value;
if (thedate.charAt(thedate.length-3)!="-"||thedate.charAt(2)!="-") {
alert('Incorrect Date')
}
}
</script>

<form name="form1">
<input type="text" name="mydate" size="20" onChange="ver_date();" value="12-DDDDDDDDDDDD-45">
</form>

[nolachrymose]

function validDate(dateStr) {
var re=/\d{2}-[a-z]{3}-\d{2}/i;
return (re.test(dateStr));
}

Hope that helps!

Happy coding! :)

[mordred]

A slight amendment by a nitpicker like me:


function validDate(dateStr) {
var re=/^\d{2}-[a-z]{3}-\d{2}$/i;
return (re.test(dateStr));
}

[hendryk]

Originally posted by x_goose_x
Pretty simple. Just searches for the - . Any good or do you want more?

<script>
function ver_date() {
thedate = document.form1.mydate.value;
if (thedate.charAt(thedate.length-3)!="-"||thedate.charAt(2)!="-") {
alert('Incorrect Date')
}
}
</script>

<form name="form1">
<input type="text" name="mydate" size="20" onChange="ver_date();" value="12-DDDDDDDDDDDD-45">
</form>

This is good but how do I make sure that the middle three characters are not numbers and are an abbreviation for a month of the year.

Thanks

Katie

[x_goose_x]

Checks for - , checks to make sure day & year are numbers, checks if month is in array.


<script>
mon = new Array();
mon[0] = "jan";
mon[1] = "feb";
mon[2] = "mar";
mon[3] = "apr";
//... finish this

go = "";
z = new Array();

function ver_date() {

thedate = document.form1.mydate.value.toLowerCase();

month = thedate.substring(3,thedate.length-3);

z[0] = thedate.charCodeAt(0);
z[1] = thedate.charCodeAt(1);
z[2] = thedate.charCodeAt(thedate.length-2);
z[3] = thedate.charCodeAt(thedate.length-1);

for (y=0; y<z.length; y++) {
if (z[y]>57||z[y]<48) {
go = false;
}
}

for (x=0; x<mon.length; x++) {
if (month==mon[x]) {
go = true;
}
}

if (thedate.charAt(thedate.length-3)!="-"||thedate.charAt(2)!="-") {
go = false;
}

if (!go) {
alert("Incorrect Date!")
}
}
</script>

<form name="form1">
<input type="text" name="mydate" size="20" onChange="ver_date();" value="12-hello-45">
</form>

[BrightNail]

hmmm,

all that code seems very long and overbearing..but I am PROBABLY wrong...I would try something like so...

var verifydate=/^\d{2}\-\D{3}\-\d{2}$/


!verifydate.test(document.form.date.value)

2 numbers a dash, 3 letters, a dash, 2 numbers