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Money Counter

Description
Enter the number of bills and coins and this script will calculate the total amount of money you have. All blank entries are ignored. Input field validation is also included - try entering a non-digit into a field. Also, this script is a good demonstration of a JavaScript return function in use....View A Script Demo


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="TextPad 4.4">
<LINK href="general.css" rel="stylesheet" type="text/css">
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
function s(num, val) {
amount = num * 1; // amount is the num or NaN
sum = (!num ? 0 : num) * val;  // the sum for that bill or coin

if (isNaN(amount)) { // if the entire is not a number

alert(
"' " + num + " ' is not a valid entry and that field will "
+ "not be included in the total money calculation."
);

return 0;
}
else
return sum; // if it is OK, send sum back
}

function money(form) {
hun = s(form.hun.value, 100); // Each amount is the returned value
fif = s(form.fif.value, 50);  // for the amount in the s() function
twe = s(form.twe.value, 20);
ten = s(form.ten.value, 10);
fiv = s(form.fiv.value, 5);
one = s(form.one.value, 1);
hlf = s(form.hlf.value, .5);
qtr = s(form.qtr.value, .25);
dme = s(form.dme.value, .1);
nck = s(form.nck.value, .05);
pny = s(form.pny.value, .01);

// add up all the amounts
var ttl = hun + fif + twe + ten + fiv
+ one + hlf + qtr + dme + nck + pny;

// rounds total to two decimal places

ttl = "" + ((Math.round(ttl * 100)) / 100);

dec1 = ttl.substring(ttl.length-3, ttl.length-2);
dec2 = ttl.substring(ttl.length-2, ttl.length-1);

if (dec1 != '.') { // adds trailing zeroes if necessary
if (dec2 == '.') ttl += "0";
else ttl += ".00";
}
form.total.value = "$ " + ttl; // display total amount
}
//  End -->
</script>

</HEAD>

<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<form name=coinform>
<table border=1>
<tr>
<td align=center>$ 100</td>
<td align=center>$ 50</td>
<td align=center>$ 20</td>
<td align=center>$ 10</td>
<td align=center>$ 5</td>
<td align=center>$ 1</td>
</tr>
<tr>
<td align=center><input type=text name=hun size=3></td>
<td align=center><input type=text name=fif size=3></td>
<td align=center><input type=text name=twe size=3></td>
<td align=center><input type=text name=ten size=3></td>
<td align=center><input type=text name=fiv size=3></td>
<td align=center><input type=text name=one size=3></td>
</tr>
<tr>
<td colspan=6> </td>
</tr>
<tr>
<td> </td>
<td align=center>50 ¢</td>
<td align=center>25 ¢</td>
<td align=center>10 ¢</td>
<td align=center>5 ¢</td>
<td align=center>1 ¢</td>
</tr>
<tr>
<td> </td>
<td align=center><input type=text name=hlf size=3></td>
<td align=center><input type=text name=qtr size=3></td>
<td align=center><input type=text name=dme size=3></td>
<td align=center><input type=text name=nck size=3></td>
<td align=center><input type=text name=pny size=3></td>
</tr>
<tr>
<td colspan=5 align=center>
<input type=button name=calc value="Calculate" onClick="javascript:money(this.form)">
<input type=text name=total size=10>
</td>
</tr>
</table>
</form>

</center>
</BODY>
</HTML>
 

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