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Advance DHTML Tutorial

Born Which Day?

I'm sure most of you are curious about what day of the week you were born. This script will tell you exactly that - in a nice layout, as well. Now, you know.

Insert into <HEAD>

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function calculate() {
month = document.form.month.selectedIndex;
month = document.form.month.options[month].value;
day = document.form.day.selectedIndex;
day = document.form.day.options[day].value;
year = document.form.year.value;

var oyear=year

var dob = " "+ year +", "+month + ",  "+day;
var thenx = new Date(dob);

var year=thenx.getYear();
if (year<100) year="19" + thenx.getYear();
else year=thenx.getYear();

if (year > 1969) wyear=year;
else {
if (oyear<1900) {
if (oyear>1800) {
wrelyear= (eval(oyear)-1801)%(28);
wyear = wrelyear+1981;
}
else wyear = 1970 
}
else
if (oyear>1900) {wrelyear= (eval(oyear)-1901)%(28); 
wyear= wrelyear+1985
}
else 
if (oyear==1900) {wyear= 1990;
   }              
}
var dob = " "+ wyear +", "+month + ",  "+day;
var thenx = new Date(dob);

var theday = thenx.getDay()+1;
var date=thenx.getDate();

var weekday = new Array(6);
weekday[1]="Sunday";
weekday[2]="Monday";
weekday[3]="Tuesday";
weekday[4]="Wednesday";
weekday[5]="Thursday";
weekday[6]="Friday";
weekday[7]="Saturday";
if (day != date) alert("Sorry!  That appears to be an invalid date!"+day+" ..."+date+"::"+oyear+"..."+year+" "+dob+"=="+wyear+".-.-"+thenx+" "+day+" "+month);
else {
dayborn = weekday[theday];
dob = dayborn + ", " + month + " " + date + ", " + oyear + ".";
alert("You were born on " + dob);
   }
}
// End -->
</script>
</head>

Insert into <BODY>

<form name=form>
<center>
<table border=2 cellspacing=0 cellpadding=0 bgcolor=white>
<tr><td colspan=3 align=center><font face="verdana, arial" size="-1">When were you born?</font></td></tr>
<tr><td align=center>
<select name="month">
<option value="" selected>Month
<option value="January">Jan
<option value="February">Feb
<option value="March">Mar
<option value="April">Apr
<option value="May">May
<option value="June">Jun
<option value="July">Jul
<option value="August">Aug
<option value="September">Sep
<option value="October">Oct
<option value="November">Nov
<option value="December">Dec
</select>
</td>
<td align=center>
<select name="day">
<option value="" selected>Day
<option value="1">01
<option value="2">02
<option value="3">03
<option value="4">04
<option value="5">05
<option value="6">06
<option value="7">07
<option value="8">08
<option value="9">09
<option value="10">10
<option value="11">11
<option value="12">12
<option value="13">13
<option value="14">14
<option value="15">15
<option value="16">16
<option value="17">17
<option value="18">18
<option value="19">19
<option value="20">20
<option value="21">21
<option value="22">22
<option value="23">23
<option value="24">24
<option value="25">25
<option value="26">26
<option value="27">27
<option value="28">28
<option value="29">29
<option value="30">30
<option value="31">31
</select>
</td>
<td align=center>
<input type=text name=year value="19" size=4 maxlength=4>
</td></tr>
</table><p>
<input type=button value="Calculate" onClick="calculate()">
</center>
</form>

Other Options