<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<script type="text/javascript">
var num = prompt("Enter number > 0", "0");
while ((num <=0) || (isNaN(num)==true))
{
var num = prompt("Enter number > 0", "0");
}
for (var i=0; i<num; i++)
{
alert("Starting in " + (num-i));
}
alert ("Roll Film!");
</script>
</body>
</html>
Question 2 - Multiplication
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<script type="text/javascript">
document.write("<table><tr><td colspan=10><h1>Multiplication Table</h1></td></tr>");
for(var i = 1; i <= 10; i++)
{
document.write("<tr>");
for (var j = 1 ; j <= 10; j++)
{
document.write("<td>" + i + " * " + j + " = " + (i * j) + "</td>");
}
document.write("</tr>");
}
document.write("</table>");
</script>
</body>
</html>
Question 3 - Online Reservation
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
</head>
<body>
<script type="text/javascript">
function assignSeat()
{
for (var i = 1; i <= 5; i ++)
{
if (document.getElementById(i).title == "a")
{
document.getElementById(i).src= "seat_select.png";
if (confirm("Seat " + i + " is available. Accept? "))
{
document.getElementById(i).src = "seat_unavail.png";
document.getElementById(i).title = "u";
break;
}
else
{
}
document.getElementById(i).src= "seat_avail.png";
}
}
}
</script>
<img src="seat_avail.png" alt = "1" id="1" title = "a" />
<img src="seat_avail.png" alt = "2" id="2" title = "a" />
<img src="seat_avail.png" alt = "3" id="3" title = "a" />
<img src="seat_avail.png" alt = "4" id="4" title = "a" />
<img src="seat_avail.png" alt = "5" id="5" title = "a" />
<br />
<input type="button" value="Reserve Seat" onclick="assignSeat()" />
</body>
</html>
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