fsDate - JavaScript Vision

fsDate( )
See also: fvDate

Function used to determines whether or not the passed value is a properly formatted date. If the value is not a properly formatted date, then the proper value is returned.

Syntax

JSV_fsDate(expV [, emptyOK])

Prototype

n/a

Returns

The fsDate function returns VALID if expV is a valid date, EMPTY if expV is empty; otherwise, INVALID.

Parameters

The fsDate function uses the following arguments.

Argument	Description
expV	The date string.

Remarks

A properly formatted date is of the form mm/dd/yyyy, where mm is any valid month value 1-12 (leading zero is optional), the dd is any valid day value for the month 1-31 (leading zero is optional), and the year is a four-digit year.

Dependencies

JSV_occurs, JSV_parseString, JSV_isWhitespace, JSV_allowInString, JSV_toString, JSV_isMonth, JSV_isDay

Example

The following lines of code


function CheckField() {
    var isValidDate = JSV_fsDate(document.DateForm.MyDate.value);
    if (isValidDate == EMPTY)
        alert("This field DOES NOT contain a valid date.");
    else if (isValidDate == INVALID)
        alert("This field contains an INVALID date.");
    else 
        alert("This field contains a VALID date.");
}

<FORM NAME="DateForm">
<B>Date:</B>
<INPUT TYPE="Text" NAME="MyDate" SIZE="10" MAXLENGTH="10" 
       onBlur="JSV_fsDate(this,true);">
<INPUT TYPE="Button" NAME="DateCheck" VALUE="Check">
</FORM>

produce

Enter a date and click the Check button.