Sales Tax

Although the value on a slider component is always an integer we can easily use it to select decimal numbers. In the example below we want find the sales tax on a purchase of any amount up to $100.00

We do this by making the maximum on the slider 100 times the maximum amount we want to select. When we show the value, we divide the value on the slider by 100 to get dollars and cents.

1. Start a new ActionScript movie.
2. Add a Slider and name it sldCost.
3. Create text boxes lblCost and lblTax.
4. Write the code as shown below.

sldCost.addEventListener(MouseEvent.MOUSE_MOVE,showCost);
function showCost(e:MouseEvent): void {
	var cost:Number=sldCost.value/100;
	var tax:Number=cost*0.06;  //6% tax
	lblCost.text="$" + cost.toFixed(2);
   lblTax.text="$" + tax.toFixed(2);
} //showCost 

Notice that we use the toFixed function of a number to force it to display two decimal places. Without this function, $2.70 would display as $2.7.

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Sales Tax: Select decimal values with a Slider component