How to detect a button being released?

Questions & Answers
1

I am using JavaScript and I have a GUI button. When the button is held down a timer goes and when it is released the timer stops.
I’d like to have it so When the mouse releases the button the game would stop, show a game over and your time would be displayed.

I tried GetButtonUp function but that doesnt work with GUI.
Is there a way to make buttons without GUI ?
pragma strict

var counter: int = 0; 
var Timer = 0.0;
var gameText: GUIText;
var btnStyle:GUIStyle;
var backGround:GUIStyle;

function Start(){ 
	gameText = gameObject.GetComponent(GUIText); 
}
function OnGUI () {
GUI.Box (Rect (100,100,200,300), "Hold IT", backGround); 
    if (GUI.RepeatButton(new Rect(50,50,100,110),"", btnStyle)) {
	counter++;
	Timer += Time.deltaTime;
	var hours : int =  Timer / 3600;
    var minutes : int = Timer / 60;
    var seconds : int = Timer % 60;
    var fraction : int = (Timer * 100) % 100;
	gameText.text = String.Format ("{0:00}:{1:00}:{2:00}:{3:00}", hours, minutes, seconds, fraction);  
    }
  }
2

If I’m understanding your question correctly, I would do something like this:

var counter: int = 0; 
var Timer = 0.0;
var gameText: GUIText;
var btnStyle:GUIStyle;
var backGround:GUIStyle;

//A bool to let us know if the button has been pressed or not
var down = false;
 
function Start(){ 
    gameText = gameObject.GetComponent(GUIText); 
}
function OnGUI () {
GUI.Box (Rect (100,100,200,300), "Hold IT", backGround); 
    if (GUI.RepeatButton(new Rect(50,50,100,110),"", btnStyle)) {
    //when the button is pressed we make down equal true
    down = true;
    counter++;
    Timer += Time.deltaTime;
    var hours : int =  Timer / 3600;
    var minutes : int = Timer / 60;
    var seconds : int = Timer % 60;
    var fraction : int = (Timer * 100) % 100;
    gameText.text = String.Format ("{0:00}:{1:00}:{2:00}:{3:00}", hours, minutes, seconds, fraction);  
    }
    else if(down == true && Event.current.type == EventType.MouseUp) { 
           //An else if statement that will only be true if the button is not 
           //pressed but has been pressed in the past and the mouse has been lifted
           //but to check in the OnGUI function if the mouse has lifted we need to use Event.current and 
           //check it against the event type of mouse up which will only be true if the mouse has been pressed down and released
           //Thanks to BoredMormon for the Event.current == EventType.MouseUp part! This code wouldn't work without it!

           //Game over code
           //Remember to set down to false every time a new game is started or else
           //the game over code will run right at the start of the game!
           //Also remember that if you don't set down to false after the game over code every time you click the mouse and release the game over code will run
    }
  }

Here is some more info about Events:

Hope that helps! Let me know if it didn’t answer your question!