Best Price

Description
Calculates the total cost of an order based on the number of items you want to order. As the total number increases, the cost per item decreases...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">

<!-- Original:  WarpGear Software (bbcalculator@warpgear.com) -->

<!-- Web Site:  http://www.warpgear.com/developer -->

<!-- Begin

var max_units = 200; // quantities in excess of max_units all have the same unit price

var currency = "$"; // currency sign used in 'formatMessage()'

// Edit this function to reflect your discount prices! 

function getDiscountPrice(units) {

// Note: It is important to work your way down from max to min amounts!

if (units >= max_units) return 4; 

if (units >= 100) return 6;

if (units >= 50) return 8;

if (units >= 25) return 10;

if (units >= 10) return 13;

if (units >= 5) return 16;

if (units >= 2) return 17.50;

if (units == 1) return 19.95;

if (units <= 0) return 0;

}

function getNumberOfUnits() {

var units = document.calculator.units.value; 

return (units == "") ? 0 : units;

}

function showResult(result) {

// adjust the following line if result must popup somewhere else

document.calculator.respons.value = result;     

}

function formatMessage(units, unit_price) {

return units + " * " + currency + formatPrice(unit_price) + " = " + currency + formatPrice(units * unit_price);

}

// AltUnits (alternate units): add extra units to reach minimum for next discount price

function getAltUnits(units) {

var discount_price = getDiscountPrice(units);

if (units < max_units) do { units++ } while (discount_price == getDiscountPrice(units));

return units;

}

function findPrice() {

var units = getNumberOfUnits();

var unit_price = getDiscountPrice(units);

var alt_units = getAltUnits(units);

var alt_unit_price = getDiscountPrice(alt_units);

var result;

if ((units * unit_price) < (alt_units * alt_unit_price)) 

result = formatMessage(units, unit_price); 

else

result = formatMessage(alt_units, alt_unit_price);

showResult(result);

}

function formatPrice(value) {

var result= Math.floor(value) + ".";

var cents = 100 * (value-Math.floor(value)) + 0.5;

result += Math.floor(cents / 10);

result += Math.floor(cents % 10);

return result;

}

function filterNonNumeric(field) {

var result = new String();

var numbers = "0123456789";

var chars = field.value.split(""); // create array 

for (i = 0; i < chars.length; i++) {

if (numbers.indexOf(chars[i]) != -1) result += chars[i];

}

if (field.value != result) field.value = result;

}

//  End -->

</script>

</HEAD>

<BODY Background=../graphics/grayback.jpg onLoad="findPrice()">

<center><BR><BR><BR>

<table border="1" cellspacing="0" cellpadding="3" width="300">

<tr>

<td>Single unit license</td>

<td width=50 align=right>$19.95</td>

</tr>

<tr>

<td>License for 2 to 4 units</td>

<td width=50 align=right> $17.50</td>

</tr>

<tr>

<td>License for 5 to 9 units</td>

<td width=50 align=right>$16.00</td>

</tr>

<tr>

<td>License for 10 to 24 units</td>

<td width=50 align=right> $13.00</td>

</tr>

<tr>

<td>License for 25 to 49 units</td>

<td width=50 align=right>$10.00</td>

</tr>

<tr>

<td>License for 50 to 99 units</td>

<td width=50 align=right> $8.00</td>

</tr>

<tr>

<td>License for 100 to 199 units</td>

<td width=50 align=right> $6.00</td>

</tr>

<tr>

<td>License for 200 or more units</td>

<td width=50 align=right> $4.00</td>

</tr>

</table>

<br>

<form name=calculator>

Units:

<input type=text value="1" name="units" onkeydown="findPrice()" onKeyUp="filterNonNumeric(this); findPrice()" onkeypress="findPrice()" size="4">

<input type=text onfocus="this.blur()" name="respons" size="24" style="border:0; font-weight:bold;">

</form>

</center>

</BODY>

</HTML>

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