/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
Modifying Table Cell Content
.absoluteWrap {position:absolute}
.relativeWrap {position:relative}
.total {color:red}
var Ver4 = parseInt(navigator.appVersion) == 4
var Ver4Up = parseInt(navigator.appVersion) >= 4
var Nav4 = ((navigator.appName == "Netscape") && Ver4)
var modifiable
// calculate and display a row's total
function showTotal(qtyList) {
var qty = qtyList.options[qtyList.selectedIndex].value
var prodID = qtyList.name
var total = "US$" +
(qty * parseFloat(qtyList.form.elements[prodID + "Price"].value))
var newCellHTML = "" + total + ""
if(Nav4) {
document.layers[prodID + "TotalWrapper"].document.layers[prodID +
"Total"].document.write(newCellHTML)
document.layers[prodID + "TotalWrapper"].document.layers[prodID +
"Total"].document.close()
} else if (modifiable) {
if (document.all) {
document.all(prodID + "Total").innerHTML = newCellHTML
} else {
document.getElementById(prodID + "Total").innerHTML = newCellHTML
}
}
}
// initialize global flag for browsers capable of modifiable content
function init() {
modifiable = (Ver4Up && document.body && document.body.innerHTML)
}
// display content for all products (e.g., in case of Back navigation)
function showAllTotals(form) {
for (var i = 0; i < form.elements.length; i++) {
if (form.elements[i].type == "select-one") {
showTotal(form.elements[i])
}
}
}
Modifying Table Cell Content
Product Description
Price Each
Quantity
Total
Wonder Widget 9000
US$125.00
0
1
2
3
if (Nav4) {
var placeHolder = " "
placeHolder += " "
document.write("")
document.write("")
document.write("" + placeHolder + "")
} else {
document.write("" +
"
")
}