Adding Comments

BCMG76 · Nov 5, 2010

Hi guys, can anyone help with adding comments in this codes, im still new in this field and im trying hard to learn through whatever media i can get.Thanks in advance.
function MakeArray(n) {
this.length = n;
for (var i=1;i<=n;i++) {this=0}
return this;
}

function BuildZeroArray(n) {
this.length = n;
for (var i=0;i<=n;i++) {this=0}
return this;
}

function prodobj(name, unitprice) {
this.name = name;
this.unitprice = unitprice;
}

function ordobj(prodsub, qty, unitprice, extprice) {
this.prodsub = prodsub;
this.qty = qty;
this.unitprice = unitprice;
this.extprice = extprice;
}

function updateRow(rownum){
var exeLine='ProdSubscript=document.ordform.prodchosen'+rownum+'.selectedIndex'
eval(exeLine);
ordData[rownum].prodsub=ProdSubscript;
var exeLine='tempqty=document.ordform.qty'+rownum+'.value'
eval(exeLine);
ordData[rownum].qty=tempqty-0 //-- Gets unit price from the product price list.
ordData[rownum].unitprice=prodlist[ProdSubscript].unitprice
ordData[rownum].extprice=(ordData[rownum].qty)*ordData[rownum].unitprice
var exeLine='document.ordform.unitprice'+rownum+'.value=currency(ordData['+rownum+'].unitprice,10)'
eval (exeLine)
var exeLine='document.ordform.extprice'+rownum+'.value=currency(ordData['+rownum+'].extprice,10)'
eval(exeLine);
updateTotals();
}

function updateTotals() {
var subtotal = 0;
for (var i=1;i<=RowsInForm;i++) {
subtotal=subtotal+ordData.extprice;
}
document.ordform.subtotal.value = currency(subtotal,10);
salestax=0
if (document.ordform.Taxable.checked) {
salestax = SalesTaxRate*subtotal;
}
document.ordform.salestax.value = currency(salestax,10);
document.ordform.grandtotal.value = currency(subtotal+salestax,10);
}

function currency(anynum,width) {
anynum=eval(anynum);
workNum=Math.abs((Math.round(anynum*100)/100));workStr=""+workNum;
if (workStr.indexOf(".")==-1){workStr+=".00"}
dStr=workStr.substr(0,workStr.indexOf("."));dNum=dStr-0;
pStr=workStr.substr(workStr.indexOf("."));
while (pStr.length<3){pStr+="0"}

if (dNum>=1000) {
dLen=dStr.length;
dStr=parseInt(""+(dNum/1000))+","+dStr.substring(dLen-3,dLen);
}

if (dNum>=1000000) {
dLen=dStr.length
dStr=parseInt(""+(dNum/1000000))+","+dStr.substring(dLen-7,dLen);
}
retval=dStr+pStr;
if (anynum < 0) {
retval=retval.substring(1,retval.length);
retval="("+retval+")";
}
retval = "R"+retval
//--Pad with leading blanks to better align numbers.
while (retval.length<width){retval=" "+retval}

return retval;
}
</script>
</head>
<body>
<h2><b><center>Ligwalagwala Order Form</center></b></h2>
<div id="navbar" style="text-align:center;">
<p><a href="Ligwalagwalafunerals.html">Home</a> | <a href="services.html">Services</a> | <a href="orderform.html">Order Form</a> | <a href="contacts.html">Contact Us</a><br /></div>
</p>
<table border="0">
<tr>
<h3><b>Complete the form below</b></h3>
<p>Name<br />
<input type="text" name="name" size="40" /></p>
<p>Surname<br />
<input type="text" name="surname" size="40" /></p>
<p>Residential Address<br />
<input type="text" name="residential_address" size="60" /></p>
<input type="text" name="name" size="60" /></p>
<input type="text" name="name" size="60" /></p>
<p>Code<input type="text" name="code" size="10" onchange="return checkForNumber(this.value);"/></p>
<p>Contact Number<br />
<input type="text" name="area_code" size="3" maxlength="3" onchange="return checkForNumber(this.value);" />
<input type="text" name="number" size="7" maxlength="7" onchange="return checkForNumber(this.value);" /></P>
<p>Cellphone<br />
<input type="text" name="cellnumber" size="10" maxlength="10" onchange="return checkForNumber(this.value);" /></p>
<p>Email Address<br />
<input type="text" name="email" size="50" /></P>
</tr></table>
<script type="text/JavaScript">

prodlist = new BuildZeroArray(ProductsInList);

prodlist[0] = new prodobj('Please choose',0);
prodlist[1] = new prodobj('Funeral Coffin Basic',750.00);
prodlist[2] = new prodobj('Funeral Coffin Basic 2',1500.50);
prodlist[3] = new prodobj('Casket Basic',5000.00);
prodlist[4] = new prodobj('Casket Basic 2',10000.00);
prodlist[5] = new prodobj('Full Funeral Basic 1',5000.00);
prodlist[6] = new prodobj('Full Funeral Basic 2',7500.00)
prodlist[7] = new prodobj('Full Funeral Basic 3',10000.00);
prodlist[8] = new prodobj('Body Storaage per day',100.00);
prodlist[9] = new prodobj('Tent Chairs Hire',1000.00);
prodlist[10] = new prodobj('Grave Arrangement',550.00);

ordData = new MakeArray(RowsInForm);
for (var i=1; i<= RowsInForm; i++) {
ordData = new ordobj(0,0,0,0);
}
</script>
</p>
<form name="ordform" method="post" action="someHandler">
<table align="center" border="1"><tr>
<th width="192" <b>Product</b></th>
<th width="72" align="center"><b>Qty</b></th>
<th width="120" align="center"><b>Unit Price</b></th>
<th width="120" align="center"><b>Ext Price</b></th>
</tr>

<script type="text/JavaScript">
for (var rownum=1;rownum<=RowsInForm;rownum++) {
document.write('<tr><td width=192 >');
document.write('<select name="prodchosen'+rownum+'" onChange="updateRow('+rownum+')">');
for (i=0; i<=ProductsInList; i++) {
document.write ("<option>"+prodlist.name);
}
document.write ('</select></td>');
document.write ('<td width=72 align="center"><input class="num" name="qty'+rownum+'" value=""');
document.write ('size=3 onChange="updateRow('+rownum+')"></td>');
document.write ('<td width=120 align="center">');
document.write ('<input class="num" name="unitprice'+rownum+'" value="" ');
document.write ('size=10 onfocus="this.blur()"></td>');
document.write ('<td width=120 align="center" >');
document.write ('<input class="num" name="extprice'+rownum+'" value="" ');
document.write ('size=10 onfocus = "this.blur()"></td>');
document.write ('</tr>');
}
</script>

davemc · Nov 5, 2010

/* Must do my own homework */
function MakeArray(n) {
this.length = n;
for (var i=1;i<=n;i++) {this=0}
return this;
}

// No really, must do it myself
function BuildZeroArray(n) {
this.length = n;
for (var i=0;i<=n;i++) {this=0}
return this;
}

/****************************/
/* Ooooh ... a pretty comment! Sexeh */
/****************************/
function prodobj(name, unitprice) {
this.name = name;
this.unitprice = unitprice;
}

function ordobj(prodsub, qty, unitprice, extprice) {
this.prodsub = prodsub;
this.qty = qty;
this.unitprice = unitprice;
this.extprice = extprice;
}

function updateRow(rownum){
var exeLine='ProdSubscript=document.ordform.prodchosen '+rownum+'.selectedIndex'
eval(exeLine);
ordData[rownum].prodsub=ProdSubscript;
var exeLine='tempqty=document.ordform.qty'+rownum+'.va lue'
eval(exeLine);
ordData[rownum].qty=tempqty-0 //-- Gets unit price from the product price list.
ordData[rownum].unitprice=prodlist[ProdSubscript].unitprice
ordData[rownum].extprice=(ordData[rownum].qty)*ordData[rownum].unitprice
var exeLine='document.ordform.unitprice'+rownum+'.valu e=currency(ordData['+rownum+'].unitprice,10)'
eval (exeLine)
var exeLine='document.ordform.extprice'+rownum+'.value =currency(ordData['+rownum+'].extprice,10)'
eval(exeLine);
updateTotals();
}

function updateTotals() {
var subtotal = 0;
for (var i=1;i<=RowsInForm;i++) {
subtotal=subtotal+ordData.extprice;
}
document.ordform.subtotal.value = currency(subtotal,10);
salestax=0
if (document.ordform.Taxable.checked) {
salestax = SalesTaxRate*subtotal;
}
document.ordform.salestax.value = currency(salestax,10);
document.ordform.grandtotal.value = currency(subtotal+salestax,10);
}

function currency(anynum,width) {
anynum=eval(anynum);
workNum=Math.abs((Math.round(anynum*100)/100));workStr=""+workNum;
if (workStr.indexOf(".")==-1){workStr+=".00"}
dStr=workStr.substr(0,workStr.indexOf("."));dNum=d Str-0;
pStr=workStr.substr(workStr.indexOf("."));
while (pStr.length<3){pStr+="0"}

if (dNum>=1000) {
dLen=dStr.length;
dStr=parseInt(""+(dNum/1000))+","+dStr.substring(dLen-3,dLen);
}

if (dNum>=1000000) {
dLen=dStr.length
dStr=parseInt(""+(dNum/1000000))+","+dStr.substring(dLen-7,dLen);
}
retval=dStr+pStr;
if (anynum < 0) {
retval=retval.substring(1,retval.length);
retval="("+retval+")";
}
retval = "R"+retval
//--Pad with leading blanks to better align numbers.
while (retval.length<width){retval=" "+retval}

return retval;
}
</script>
</head>
<body>



<h2><b><center>Ligwalagwala Order Form</center></b></h2>
<div id="navbar" style="text-align:center;">
<p><a href="Ligwalagwalafunerals.html">Home</a> | <a href="services.html">Services</a> | <a href="orderform.html">Order Form</a> | <a href="contacts.html">Contact Us</a><br /></div>
</p>
<table border="0">
<tr>
<h3><b>Complete the form below</b></h3>
<p>Name<br />
<input type="text" name="name" size="40" /></p>
<p>Surname<br />
<input type="text" name="surname" size="40" /></p>
<p>Residential Address<br />
<input type="text" name="residential_address" size="60" /></p>
<input type="text" name="name" size="60" /></p>
<input type="text" name="name" size="60" /></p>
<p>Code<input type="text" name="code" size="10" onchange="return checkForNumber(this.value);"/></p>
<p>Contact Number<br />
<input type="text" name="area_code" size="3" maxlength="3" onchange="return checkForNumber(this.value);" />
<input type="text" name="number" size="7" maxlength="7" onchange="return checkForNumber(this.value);" /></P>
<p>Cellphone<br />
<input type="text" name="cellnumber" size="10" maxlength="10" onchange="return checkForNumber(this.value);" /></p>
<p>Email Address<br />
<input type="text" name="email" size="50" /></P>
</tr></table>
<script type="text/JavaScript">

prodlist = new BuildZeroArray(ProductsInList);

prodlist[0] = new prodobj('Please choose',0);
prodlist[1] = new prodobj('Funeral Coffin Basic',750.00);
prodlist[2] = new prodobj('Funeral Coffin Basic 2',1500.50);
prodlist[3] = new prodobj('Casket Basic',5000.00);
prodlist[4] = new prodobj('Casket Basic 2',10000.00);
prodlist[5] = new prodobj('Full Funeral Basic 1',5000.00);
prodlist[6] = new prodobj('Full Funeral Basic 2',7500.00)
prodlist[7] = new prodobj('Full Funeral Basic 3',10000.00);
prodlist[8] = new prodobj('Body Storaage per day',100.00);
prodlist[9] = new prodobj('Tent Chairs Hire',1000.00);
prodlist[10] = new prodobj('Grave Arrangement',550.00);

ordData = new MakeArray(RowsInForm);
for (var i=1; i<= RowsInForm; i++) {
ordData = new ordobj(0,0,0,0);
}
</script>
</p>
<form name="ordform" method="post" action="someHandler">
<table align="center" border="1"><tr>
<th width="192" <b>Product</b></th>
<th width="72" align="center"><b>Qty</b></th>
<th width="120" align="center"><b>Unit Price</b></th>
<th width="120" align="center"><b>Ext Price</b></th>
</tr>

<script type="text/JavaScript">
for (var rownum=1;rownum<=RowsInForm;rownum++) {
document.write('<tr><td width=192 >');
document.write('<select name="prodchosen'+rownum+'" onChange="updateRow('+rownum+')">');
for (i=0; i<=ProductsInList; i++) {
document.write ("<option>"+prodlist.name);
}
document.write ('</select></td>');
document.write ('<td width=72 align="center"><input class="num" name="qty'+rownum+'" value=""');
document.write ('size=3 onChange="updateRow('+rownum+')"></td>');
document.write ('<td width=120 align="center">');
document.write ('<input class="num" name="unitprice'+rownum+'" value="" ');
document.write ('size=10 onfocus="this.blur()"></td>');
document.write ('<td width=120 align="center" >');
document.write ('<input class="num" name="extprice'+rownum+'" value="" ');
document.write ('size=10 onfocus = "this.blur()"></td>');
document.write ('</tr>');
}
</script>

Raithlin · Nov 5, 2010

@Dave

You forgot the obligatory

/***********
* Not sure what this does any more, but it works.
***********/

and

// Build a Zero Array
function BuildZeroArray(n) {

(I hate those obvious comments)

Keeper · Nov 5, 2010

Raithlin said:
@Dave

You forgot the obligatory

/***********
* Not sure what this does any more, but it works.
***********/

and

// Build a Zero Array
function BuildZeroArray(n) {

(I hate those obvious comments)

Bwahahaha! Thanx man, nice to end off a week like this

stevenv · Nov 8, 2010

Ever heard of CODE tags?

Oh, and I have one comment: get some coding standards.

Code:

function MakeArray(n)
function prodobj(name, unitprice)
function updateRow(rownum)

This usually indicates internet-copy-and-paste: if you're going to do that, at least make it look like your own.

What's the reasoning behind eval()?

Raithlin · Nov 8, 2010

BCMG76 said:
im still new in this field and im trying hard to learn through whatever media i can get.Thanks in advance.

I didn't see this until now. You're better off finding some tutorials (this forum has plenty of threads asked and answered regarding this), and working through small samples to get an understanding of what does what. Once you have that under your belt, you can look at the more complete (and complex) pages.

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Adding Comments

BCMG76

Active Member

davemc

Executive Member

Raithlin

Executive Member

Keeper

Honorary Master

stevenv

Expert Member

Raithlin

Executive Member