Binary To Decimal

Question

Hi i am having trouble from converting a binary number into decimal. I found the following code from a tutorial online and would like to merge it inside the code i currently have.
This is the example i found online:
//initialize the place values
var place:Array = [32, 16, 8, 4, 2, 1];
//initialize your binary number
var binary:Array = [1, 1, 0, 0, 1, 1];
//trace it as a string
trace(binary.join(""));
//convert it to a decimal number
var decimalNumber = (place[0]*binary[0])+(place[1]*binary[1])+(place[2]*binary[2])+(place[3]*binary[3])+(place[4]*binary[4])+(place[5]*binary[5]);
//trace the result
trace(decimalNumber);
This is the code i currently have
var binaryArray:Array = new Array();
var num:Number;
var binaryString:String;
var round:Number;
var bString:String;
var bNumber:Number;
decimal_txt.addEventListener(KeyboardEvent.KEY_DOWN, checkEnterKey);
function checkEnterKey(e:KeyboardEvent):void
if(decimal_txt.text != '' && e.keyCode == Keyboard.ENTER)
num = Number(decimal_txt.text);
//trace(e.keyCode + " : " + tf.text);
bString = convertDecimalToBinary(num);
bNumber = Number(binaryString);
binary_txt.text = bString;
function getTextInput(e:KeyboardEvent):void
num = Number(decimal_txt.text);
//trace(e.keyCode + " : " + tf.text);
bString = convertDecimalToBinary(num);
bNumber = Number(binaryString);
binary_txt.text = bString;
function convertDecimalToBinary(num:Number):String
if(num == 0)
return String("");
binaryString = ''; //starts with an empty string
while(num > 0)
num /= 2;
if(Math.floor(num) == num)
binaryArray.push(0);
else
binaryArray.push(1);
trace(num);
num = Math.floor(num);
for(var i:int = binaryArray.length-1; i >= 0; i--)
binaryString += binaryArray[i];
// clear array to prepare for next input
binaryArray.pop();
while (binaryString.length<8) {
binaryString = "0"+binaryString;
//trace(binaryString);
return binaryString;
However the first code already sets a decimal value in the array and calculates it but i would like to merge it with the one i have which outputs the decimal value from an input of a binary number. How would this be possible?

Answer 1

what output?
all you're doing is defining n when a key is down.  you're not doing anything with n so i don't see how you expect any output.
if binary_txt is a textfield with a binary (string) and decimal_txt is a textfield that should display the decimal representation of  binary_txt.text, use:
binary_txt.addEventListener(KeyboardEvent.KEY_DOWN, checkEnterKey2);
function checkEnterKey2(e:KeyboardEvent):void{
if(binary_txt.text != '' && e.keyCode == Keyboard.ENTER){
decimal_txt.text=binaryToDecimal(binary_txt.text);
function binaryToDecimal(s:String):Number{
for(var i:int=0;i<s.length;i++){
n+=Number(s.substr(i,1))<<(s.length-1-i)
return n;