Problem
Need create percentage calculator.
Solution
Recreating types. Using function. Also added simple error checker. If user not enter numbers in fields he will see error.
Detailed explanation
calculate_btn.useHandCursor=true;
calculate_btn.addEventListener(MouseEvent.CLICK,
persentageCalculate);
function persentageCalculate(event:MouseEvent):void {
var a:Number=Number(sum_txt.text);
var b:Number=Number(percentage_txt.text);
var c:Number;
c=a*b/100;
enteredPercentege_txt.text=String(b);
enteredSum_txt.text=String(a);
result_txt.text=String(c);
if (sum_txt.text=="") {
sumError_txt.text="Need enter a sum!";
} else {
sumError_txt.text="";
}
if (percentage_txt.text=="") {
percentageError_txt.text="Need enter a percentage!";
} else {
percentageError_txt.text="";
}
enteredPercentege_txt.text=String(b);
enteredSum_txt.text=String(a);
result_txt.text=String(c);
}
Source:
percentageCalculator