Date (MM/DD/YY) Validation:
Enter a date in format: MM/DD/YY
*Works in Netscape 6
Code:
Place in the <HEAD>:
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<script language="JavaScript"> function checkdate() { var err=0 a=document.form1.date.value if (a.length != 8) err=1 b = a.substring(0, 2)// month c = a.substring(2, 3)// '/' d = a.substring(3, 5)// day e = a.substring(5, 6)// '/' f = a.substring(6, 8)// year if (b<1 || b>12) err = 1 if (c != '/') err = 1 if (d<1 || d>31) err = 1 if (e != '/') err = 1 if (f<0 || f>99) err = 1 if (b==4 || b==6 || b==9 || b==11){ if (d==31) err=1 } if (b==2){ var g=parseInt(f/4) if (isNaN(g)) { err=1 } if (d>29) err=1 if (d==29 && ((f/4)!=parseInt(f/4))) err=1 } if (err==1) { alert('Please enter a valid date.'); return false; } else { return true; } } </script>
Place in the <BODY>:
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<form name=form1 method=post action=""> <input type=text size=9 maxlength=8 name=date> <input type=submit name=chk value=Submit onclick="return checkdate()"> </form>