hi.
okay so how do i use the java se debugger.
and yes i am blind and using jaws for windows from
http://www.freedomscientific.com
so not offended.
should have made that known.
sorry about that.
okay will be pasting the code for the java script and the html files.
as i do not have a actual site.
and just on my local hard disk.
sorry.
thank you.
marvin.
ps: so here the code below.
function setCookie(cName,value,expires)
{
var exDate=new Date();
exDate.setMinutes(exDate.getMinutes()+expires);
cookieString = cName + "=" + escape(value) + ";expires=" +
exDate.toString() + ";path=/";
document.cookie = cookieString;
}
function getCookie(cName)
{
// We pass the textbox object so that we can change it's value.
var cStart; // This is used for the index of the beginning of the
cookie's value.
var cEnd; // This is used for the index of the beginning of the
string of the expiration date and time.
var cValue = "";
if (document.cookie.length>0)
// Determine if a cookie has been set at all
{
cStart=document.cookie.indexOf(cName + "=");
if (cStart!=-1)
// If there is an entry in the cookie who's value starts at position cStart
{
cStart=cStart + cName.length+1; // We need to take into
account the equal sign
cEnd=document.cookie.indexOf(";",cStart);
if (cEnd == -1)
cEnd=document.cookie.length; /* No semicolon was found, so
this must be the last entry. */
cValue = unescape(document.cookie.substring(cStart,cEnd));
/* Set the return value to the cookie entry's data. */
}
}
return cValue;
}
function isNumeric(strText)
{
var validChars = "0123456789"; // the string of acceptible
characters
var curChar; // This is used to store the character currently
being processed.
var isANumber = true; /* The function returns true if the string
is numeric, otherwise it returns false. */
if (strText.length == 0) /* if the length of the string is 0, the
user did nnot enter anything, and we do not need to go any further. */
{
isANumber = false;
return isANumber; /* this returns false and causes us to exit
the function. */
}
for (i = 0; (i < strText.length && isANumber); i++)
/* If we encounter a character in the string that is not a digit, isANumber is
set to false and we exit the loop early. */
{
curChar = strText.charAt(i);
/* The charAt function with I passed as its parameter gets the character at the
ith position in the string. */
if (validChars.indexOf(curChar) == -1)
/* The indexOf function with curChar passed as its parameter searches the
validChars string to see if it contains the value in curChar. If it doesn't, it
returns -1. */
isANumber = false;
}
return isANumber;
}
<html>
<head>
<title>Shopping cart application</title>
<script type="text/javascript" src="functionLib.js">
</script>
<script type="text/javascript">
var items = new Array();
var prices = new Array(3.50, 5.00, 7.50, 6.25);
// The list of prices for each item.
var quantity = new Array();
// The quantity of the given item.
function addToCart(iSelected)
// iSelected is the selectedIndex property value of the dropdown list
{
var i = items.length;
// I is used in our method of naming the cookie entry.
with (myForm)
{
try
{
if (iSelected == -1)
throw "noSelectedItem";
if (txtNumItems.value <= 0 && txtNumItems.value.length > 0)
/* A number was entered, but it is out of range. */
throw "valueOutOfRange";
if (!isNumeric(txtNumItems.value))
throw "notANumber";
items.push(ddlItems.options[iSelected].value);
// The push method appends an item to the end of the array.
quantity.push(txtNumItems.value);
setCookie(i + "cItems", items[i] + "," + prices[iSelected] +
"," + quantity[i], 30);
/* We prepend the current value of i to the beginning of "cItems" so that we
will have a unique name for each entry. */
txtNumItems.value = "";
ddlItems.selectedIndex = -1;
alert("Item added to cart");
}
catch (invalidInputException)
{
switch (invalidInputException)
{
case "noSelectedItem":
alert("You did not select an item to purchase. Please
select from the list.");
break;
case "notANumber":
alert("The value you entered for the number of items
contains a nonnumeric character, or no value was entered.");
break;
case "valueOutOfRange":
alert("The value for the quantity must be greater than
zero.");
break;
default:
alert("There was an error adding the items to your
shopping cart.\n" + invalidInputException.description);
}
}
}
}
</script>
</head>
<body align="center" onload = "javascript: myForm.ddlItems.selectedIndex = -1">
<!-- Set the dropdown list to have no selection.-->
<form name="myForm">
Please select from the dropdown
list:
<select name="ddlItems">
<option value="item 1">Item 1, $3.50</option>
<option value="item 2">Item 2, $5.00</option>
<option value="item 3">Item 3, $7.50</option>
<option value="item 4">Item 4, $6.25</option>
</select>
<br>
Please specify the quantity of this item:
<input type="text" id="txtNumItems"/>
<input type="button"value="Add to cart"
onclick="addToCart(myForm.ddlItems.selectedIndex)"/>
</form>
<a href="viewCart.html">View shopping cart</a>
</body>
</html>
<html>
<head>
<title>View shopping cart</title>
<script type="text/javascript" src="functionLib.js">
</script>
</head>
<body align="center">
<script type="text/javascript">
if (document.cookie.length == 0)
document.write("Your shopping cart is empty<br>");
else
{
var i = 0;
var sEntryString;
var sEntrySplit = new Array();
var taxPercent = 0.08;
var subTotal = 0;
var grandTotal;
document.write("<table border='3' style='width=400 height=600'>");
document.write("<tr>");
document.write("<th border='1' style='text-align:center'>Item
name</th>");
document.write("<th border='1' style='text-align:center'>Item
price</th>");
document.write("<th border='1' style='text-align:center'>Number of
items purchased</th>");
document.write("</tr>");
sEntryString = getCookie(i + "cItems");
while (sEntryString != "")
{
sEntrySplit = sEntryString.split(",");
document.write("<tr>");
document.write("<td style='text-align:right'>" +
sEntrySplit[0] + "</td><td style='text-align:right'>" +
parseFloat(sEntrySplit[1]).toFixed(2) + "</td><td style='text-align:right'>" +
sEntrySplit[2] + "</td>");
document.write("</tr>");
subTotal += parseFloat(sEntrySplit[1]) *
parseInt(sEntrySplit[2]);
i++;
sEntryString = getCookie(i + "cItems");
}
document.write("</table>");
grandTotal = subTotal * (taxPercent + 1);
document.write("totals:");
document.write("<table>");
document.write("<tr>");
document.write("<td>Sub total:</td><td style='text-align:right'>" +
subTotal.toFixed(2) + "</td></tr>");
document.write("<tr><td>tax:</td><td style='text-align:right'>" +
(subTotal * taxPercent).toFixed(2) + "</td></tr>");
document.write("<tr><td>Grand total:</td><td
style='text-align:right'>" + grandTotal.toFixed(2) + "</td></tr>");
document.write("</table>");
}
function removeItems()
{
var i = 0;
if (document.cookie.length == 0)
{
alert("No items to purchase.");
return;
}
while (getCookie(i + "cItems") != "")
{
setCookie(i + "cItems", "", -1);
i++;
}
alert("Your purchase is complete.");
}
</script>
<form name="myForm">
<input type="button" value="Complete your purchase"
onclick="removeItems()"/>
</form>
</body>
</html>
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