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Trying to make Javascript to make change(money) Posted by tonybar2 on 6 Feb 2008 at 11:22 AM
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

"http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<!-- Program change.html -->
<!-- Programmer -->
<!-- Date 1-30-2008 -->
<!-- Description Displays the correct change -->

<title>Making change</title>
</head>
<body>
<h1>What's Your Change</h1><BR>

<form>
<p align="center"><B>Enter the change total: </B>
<input type="text" size="5" name="num1"><br>
</p>
<br>
<input type="button" value="change" name="change"

onclick="addFields(this.form)">
<br>
<p align="center"><b>The correct change is</b><br>
Dollars: <input type="text" size="5" name="dollars"><br>
Quarters: <input type="text" size="5" name="quarters"><br>
Dimes: <input type="text" size="5" name="dimes"><br>
Nickels: <input type="text" size="5" name="nickels"><br>
Pennies: <input type="text" size="5" name="pennies"><br>
</p>

<script language="JavaScript1.2">
<!--
function addFields(form) {
remain = Math.round(remain * 100) / 100;
var dollars = remain / 1.0;
form.dollars.value = Math.floor(dollars);
remain = remain - Math.floor(dollars) * 1.0;

// Determines the quarters
remain = Math.round(remain * 100) / 100;
var quarters = eval(form.num1.value) / 0.25;
form.quarters.value = Math.floor(quarters);
var remain = eval(form.num1.value) - (Math.floor(quarters) * 0.25);

// Determines the dimes
remain = Math.round(remain * 100) / 100;
var dimes = remain / 0.1;
form.dimes.value = Math.floor(dimes);
remain = remain - Math.floor(dimes) * 0.1;

// Determines the nickels
remain = Math.round(remain * 100) / 100;
var nickels = remain / 0.05;
form.nickels.value = Math.floor(nickels);
remain = remain - Math.floor(nickels) * .05;

// Determines the pennies
remain = Math.round(remain * 100) / 100;
var pennies = remain / 0.01;
form.pennies.value = Math.floor(pennies);
remain = remain - Math.floor(pennies) * .01;

}

//-->
</script>

I am now a JavaScript writer.<BR>

</form>
</body>
</html>

It works fine, except I cannot get the dollars to work, anyone know what I am doing wrong?
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Re: Trying to make Javascript to make change(money) Posted by CyGuy on 7 Feb 2008 at 9:57 AM

:
: It works fine, except I cannot get the dollars to work, anyone know
: what I am doing wrong?
:

You did a good job on the program; the problem is that the value submitted is not read into the remain until after the quarters are calculated:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 

"http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<!-- Program change.html -->
<!-- Programmer Tony Barbour -->
<!-- Date 1-30-2008 -->
<!-- Description Displays the correct change -->

<title>Making change</title>
</head>
<body>
<h1>What's Your Change</h1><BR>

<form>
<p align="center"><B>Enter the change total: </B>
<input type="text" size="5" name="num1"><br>
</p>
<br>
<input type="button" value="change" name="change" 

onclick="addFields(this.form)">
<br>
<p align="center"><b>The correct change is</b><br>
Dollars: <input type="text" size="5" name="dollars"><br>
Quarters: <input type="text" size="5" name="quarters"><br>
Dimes: <input type="text" size="5" name="dimes"><br>
Nickels: <input type="text" size="5" name="nickels"><br>
Pennies: <input type="text" size="5" name="pennies"><br>
</p>

<script language="JavaScript1.2">
<!--
function addFields(form) {
var remain = form.num1.value.valueOf();
get form values first

remain = Math.round(remain * 100) / 100; 
var dollars = remain / 1.0;
form.dollars.value = Math.floor(dollars);
remain = remain - Math.floor(dollars) * 1.0;

// Determines the quarters
remain = Math.round(remain * 100) / 100;
var quarters = eval(form.num1.value) / 0.25;
form.quarters.value = Math.floor(quarters);
var remain = eval(form.num1.value) - (Math.floor(quarters) * 0.25);
fix the flow of the program with the remainders

// Determines the dimes
remain = Math.round(remain * 100) / 100;
var dimes = remain / 0.1;
form.dimes.value = Math.floor(dimes);
remain = remain - Math.floor(dimes) * 0.1;

// Determines the nickels
remain = Math.round(remain * 100) / 100;
var nickels = remain / 0.05;
form.nickels.value = Math.floor(nickels);
remain = remain - Math.floor(nickels) * .05;

// Determines the pennies
remain = Math.round(remain * 100) / 100;
var pennies = remain / 0.01;
form.pennies.value = Math.floor(pennies);
remain = remain - Math.floor(pennies) * .01;

}

//-->
</script>
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Re: Trying to make Javascript to make change(money) Posted by tonybar2 on 13 Feb 2008 at 12:43 PM
: I still cannot get this thing to work correctly, I would also like to add
fives, tens, and twenties, any help would be appreciated the code I have now is not doing the dimes right?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>
<head>
<!-- Program change.html -->
<!-- Programmer -->
<!-- Date 1-30-2008 -->
<!-- Description Displays the correct change -->

<title>Making change</title>
</head>
<body>

<h1><center>What's Your Change</center></h1><BR>

<form>

<p align="center"><B>Enter the change total: </B>
<input type="text" size="5" name="num1"><br>
</p>
<br>
<input type="button" value="change" name="change" onclick="addFields(this.form)">
<br>
<br>
<p align="center"><b>The correct change is</b><br>
Dollars: <input type="text" size="5" name="dollars"><br>
Quarters: <input type="text" size="5" name="quarters"><br>
Dimes: <input type="text" size="5" name="dimes"><br>
Nickels: <input type="text" size="5" name="nickels"><br>
Pennies: <input type="text" size="5" name="pennies"><br>
</p>

<script language="JavaScript1.2">
<!--

function addFields(form) {
var dollars = eval(form.num1.value) / 1.0;
form.dollars.value = Math.floor(dollars);
var remain = eval(form.num1.value) - (Math.floor(dollars) * 1.00);

remain = Math.round(remain * 100) / 100;
var quarters = remain / 0.25;
form.quarters.value = Math.floor(quarters);
remain = eval(form.num1.value) - (Math.floor(quarters) * 0.25);


// Determaines the dimes
remain = Math.round(remain * 100) / 100;
var dimes = remain / 0.1;
form.dimes.value = Math.floor(dimes);
var remain = eval(form.num1.value) - Math.floor(dimes) * 0.1;

// Determines the nickels
remain = Math.round(remain * 100) / 100;
var nickels = remain / 0.05;
form.nickels.value = Math.floor(nickels);
remain = remain - Math.floor(nickels) * 0.05;


// Determines the pennies
remain = Math.round(remain * 100) / 100;
var pennies = remain / 0.01;
form.pennies.value = Math.floor(pennies);
remain = remain - Math.floor(pennies) * 0.01;

}

//-->
</script>


I am now a JavaScript writer.<BR>

</form>
</body>
</html>
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Re: Trying to make Javascript to make change(money) Posted by mburton06 on 11 May 2012 at 2:58 PM
function addFields(form) {

var strCents = prompt("Please enter the number of cents", "Type number here");
var cents = parseInt(strCents);
var quarters = Math.floor(cents / 25);
var dimes = Math.floor((cents % 25) / 10);
var nickels = Math.floor(((cents % 25) % 10) / 5);
var pennies = cents % 5;
alert(cents + " cents is comprised of:\n" + quarters + " quarter(s)\n" + dimes + " dime(s)\n" + nickels + " nickel(s)\n" + pennies + " pennies\n");

}

Here is what I have model the dollars after the pennies, nickels, dimes etc. It worked for me
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Re: Trying to make Javascript to make change(money) Posted by mburton06 on 11 May 2012 at 3:02 PM
function addFields(form) {

var strCents = prompt("Please enter the number of cents", "Type number here");
var cents = parseInt(strCents);
var quarters = Math.floor(cents / 25);
var dimes = Math.floor((cents % 25) / 10);
var nickels = Math.floor(((cents % 25) % 10) / 5);
var pennies = cents % 5;
alert(cents + " cents is comprised of:\n" + quarters + " quarter(s)\n" + dimes + " dime(s)\n" + nickels + " nickel(s)\n" + pennies + " pennies\n");

}

Here's what I have, model dollars on pennies, dimes
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Re: Trying to make Javascript to make change(money) Posted by mburton06 on 11 May 2012 at 3:05 PM
function addFields(form) {

var strCents = prompt("Please enter the number of cents", "Type number here");
var cents = parseInt(strCents);
var quarters = Math.floor(cents / 25);
var dimes = Math.floor((cents % 25) / 10);
var nickels = Math.floor(((cents % 25) % 10) / 5);
var pennies = cents % 5;
alert(cents + " cents is comprised of:\n" + quarters + " quarter(s)\n" + dimes + " dime(s)\n" + nickels + " nickel(s)\n" + pennies + " pennies\n");

}

Here's what I have, model dollars on pennies, dimes, nickels etc.
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