Student Question

Question

Hello all,
Please forgive my ignorance, from the start.  I'm swimming in deep water, for me.
I have a quiz, set by the professor.  Its a basic OddEven problem.  He's set the parameters of what has to happen.  There are only two boxes and one calculate button.
My text input box has the instance name:   thenumber_txt
My dynamic box has the instance name:    feedback_txt
My button has the name:    compute_btn
When testing the movie I get the complier error 1180 in line 15 of this script:
compute_btn.addEventListener(MouseEvent.CLICK, calculatethenumber);
function calculatethenumber(event:MouseEvent):void
    var thenumber:Number;
    var thenumber = number(thenumber_txt.text);  (line 15)
    if (thenumber % 2 == 0)
        feedback_txt.text = thenumber + " is even";
    else
        feedback_txt.text = thenumber + " is odd";
    // Start your custom code
    // This example code displays the words "Mouse clicked" in the Output panel.
    trace("Mouse clicked");
    // End your custom code
This is as far as I've gotten.  You can tell I'm not a coder. 
Can anyone help me?
I thank you for any help I can get.

Answer 1

import flash.events.FocusEvent;
compute_btn.addEventListener(MouseEvent.CLICK, calculatethenumber);
thenumber_txt.addEventListener(FocusEvent.FOCUS_IN, focusInHandler);
function focusInHandler(event:FocusEvent):void {
     // if not already, you will have to create a dynamic textfield and give it the name message_txt
     message_txt.text = "";
function calculatethenumber(event:MouseEvent):void
  // and you don't need to (and should not) declare the same variable more than once
     if(thenumber_txt.text == "") {
          // if not already, you will have to create a dynamic textfield and give it the name message_txt
          message_txt.text = "Please, enter a number.";
          return;
    var thenumber:Number = Number(thenumber_txt.text);  (line 15)
    if (thenumber % 2 == 0)
        feedback_txt.text = thenumber + " is even";
    else
        feedback_txt.text = thenumber + " is odd";
    // Start your custom code
    thenumber_txt.text = "";
    stage.focus = thenumber_txt;
    // This example code displays the words "Mouse clicked" in the Output panel.
    trace("Mouse clicked");
    // End your custom code