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8.7

Calculating form - and adding a percentage - by clicking checkbox

Asked by seanpowell in JavaScript

I've been working on this for awhile but appear to be going in the wrong direction.
This form is used to calculate member dues, and all works just fine. The addition is a checkbox that - when checked, adds 1/12th of the value of the subtotal, and recalculates the new gst and grand total. I have a feeling this is a lot simpler than I've made it out to be - can anyone help?

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             function calcMem(form)
{
        var totalSales = stripCharsInBag(form.totalSales.value,",");
        var foreignSales = stripCharsInBag(form.foreignSales.value,",");
        var grossSales = totalSales - foreignSales;
        var gst = .05;
        form.grossSales.value = "$"+ currency(grossSales);
        var category = calcCat(grossSales);
        form.memCat.value = category;
        var fsubTotal = getSubTotal(category,grossSales).toFixed(2)*1;
        form.subTotal.value = "$" + currency(fsubTotal);
        gstTotal = (fsubTotal * gst).toFixed(2)*1;
        form.gst.value = "$" + currency(gstTotal);
        finalTotal = fsubTotal + gstTotal;
        form.total.value = "$" + currency(finalTotal)
        return;
}
 
function calcCat(calcSales)
{
	var memCategory;
	if (calcSales < 2500000)
	{
	memCategory = "C";
	}
	if (calcSales >= 2500000 && calcSales < 6000000)
	{
	memCategory = "C";
	}
	if (calcSales >= 6000000 && calcSales < 10000000)
	{
	memCategory = "D";
	}
	if (calcSales >= 10000000 && calcSales < 20000000)
	{
	memCategory = "E";
	}
	if (calcSales >= 20000000 && calcSales < 35000000)
	{
	memCategory = "F";
	}
	if (calcSales >= 35000000 && calcSales < 50000000)
	{
	memCategory = "G";
	}
	if (calcSales >= 50000000 && calcSales < 75000000)
	{
	memCategory = "H";
	}
	if (calcSales >= 75000000 && calcSales <100000000)
	{
	memCategory = "I";
	}
	if (calcSales >= 100000000 && calcSales <150000000)
	{
	memCategory = "J";
	}
	if (calcSales >= 150000000 && calcSales <200000000)
	{
	memCategory = "K";
	}
	if (calcSales >= 200000000)
	{
	memCategory = "L";
	}
	return memCategory;
}
 
function stripCharsInBag (s, bag)
{
 
	var i;
	var returnString = "";
	for (i = 0; i < s.length; i++)
	{
	    var c = s.charAt(i);
	    if (bag.indexOf(c) == -1) returnString += c;
	}
	return returnString;
}
 
function getSubTotal(category,grossSales)
{
	switch(category)
	{
		case "C":
		var baseFee = 3150
		var increment = .6021
		if (grossSales <= 2500000)
		{
			subTotal = baseFee;
		}else{
			grossSales = grossSales - 2500000;
		increment = increment * (grossSales/1000);
		subTotal = increment  + baseFee;
		}
		break
		case "D":
			var baseFee = 5257
			var increment = .5808
			grossSales = grossSales - 6000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "E":
			var baseFee = 7581
			var increment = .3925
			grossSales = grossSales - 10000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "F":
			var baseFee = 11506
			var increment = .2337
			grossSales = grossSales - 20000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "G":
			var baseFee = 15012
			var increment = .1616
			grossSales = grossSales - 35000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "H":
			var baseFee = 17436
			var increment = .1162
			grossSales = grossSales - 50000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "I":
			var baseFee = 20340
			var increment = .1016
			grossSales = grossSales - 75000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "J":
			var baseFee = 22879
			var increment = .0868
			grossSales = grossSales - 100000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "K":
			var baseFee = 27221
			var increment = .0694
			grossSales = grossSales - 150000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
		case "L":
			var baseFee = 30692
			var increment = .0640
			grossSales = grossSales - 200000000;
			increment = increment * (grossSales/1000);
			subTotal = increment + baseFee;
		break
	}
	return subTotal;
}
 
function roundClean(number,precision)
{
	if (typeof precision=="undefined") precision=0;
	for (var i=10;i>=precision;i--) number=Math.round(number*Math.pow(10,i))/Math.pow(10,i);
	return number;
}
 
function currency(anynum)
{
	anynum=eval(anynum)
	workNum=Math.abs(roundClean(anynum,2));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+")"
	}
	return retval;
	return "$"+retval
}
 
<form>
<table border="1" cellpadding="6" cellspacing="1" bordercolor="#488CAD">
	<tr>
		<td>Total Sales from last financial statement:</td>
		<td><input type="text" name="grossSales"> <input type="button" value="Calculate" name="Calculate" onFocus="calcMem(this.form)"></td>
	</tr>
	<tr>
		<td>Category</td>
		<td><input type="text" name="memCat" size="2"></td>
	</tr>
	<tr>
		<td>Your fee</td>
		<td><input type="text" name="subTotal"></td>
	</tr>
	<tr>
		<td>Check this box if using Option 2 (1/12 of Fee) <input type="checkbox" name="OptionBox" value="Yes"></td>
		<td><input type="text" name="Option2"></td>
	</tr>
	<tr>
		<td>5% G.S.T.</td>
		<td><input type="text" name="gst"></td>
	</tr>
	<tr>
		<td>Total</td>
		<td><input type="text" name="total"></td>
	</tr>
</table>
</form>
           
         

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Calculating form - and adding a percentage - by clicking checkbox

Asked by seanpowell in JavaScript

About this solution