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Answer 1

+11 A:

for( var i = integer; i > 0 ; i-- ) 
{
    document.write(i);
}

psychotik 2010-07-08 04:44:20

Answer 2

+2 A:

A for loop executes right away (without waiting for the setTimeout to trigger) and hence your code will set integer number of timers at the same time (in a gap of microseconds), and only the last one (where i is 1), will be visible to the user. You should do it as:

var counter = integer;
setTimeout("update();", 1000);
function update()
{
    document.getElementById("cds").value= "->" + counter + "<-";
    if(--counter == 0)
        return;
    setTimeout("update();", 1000);
}

Amarghosh 2010-07-08 04:44:59

Answer 3

+1 A:

Faster (I checked it) and easier to read...

var i = 100;
while(i--) {
   document.write(i);
}

Emrah GOZCU 2010-07-08 04:48:49

I am not saying it isn't faster, I am saying it's a hack that's not obvious to understand. If you are the only one who'll see this code, well go for it. But if there's going to be someone else maintaining it, why don't make it clear?

quantumSoup 2010-07-08 04:56:09

@Aircule: It is not easy to understand for beginners, but once they understand, i think it is easy to read for next time they look at the code. I don't say it is best way to do so, but for me it is prefered.

Emrah GOZCU 2010-07-08 05:00:01

What if I decide that now I just want to go from 100 to 2?

quantumSoup 2010-07-08 05:03:15

@Aircule: when I see that you're disagree, i post the wrong comment than i deleted it :) sorry. I posted another comment a minute ago.

Emrah GOZCU 2010-07-08 05:03:35

I would simply change the initial value of i to 2. Kidding :) Yes, I am getting your point, I don't say you are wrong and i am the right one. I've just writing this answer and i saw some answers and just decided to give my opinion about it.

Emrah GOZCU 2010-07-08 05:11:19

aha! @Aircule - of course that can be used up to 2, like this `while(i-->2) { document.write(i);}` let's play with this demo http://jsfiddle.net/XbX9S/

Reigel 2010-07-08 05:25:25

@Reigel Touché :)

quantumSoup 2010-07-08 05:33:22

@Aircule Votre accueil? :)

Reigel 2010-07-08 05:40:43

Answer 4

+1 A:

Hello You can use below script.

for( var i = integer; i > 0 ; i-- ) { document.write(i); }

Thanks.

Yunus Malek 2010-07-08 05:20:14

How is it different from psychotik's answer? If it is not, what value does it add?

Amarghosh 2010-07-08 05:33:49

Answer 5

+3 A:

according to your update, I guess you do not need the for loop, you need this,

demo

function countdown(integer) {
   var time = setInterval(function(){
        document.getElementById("cds").value="->"+(integer--)+"<-"
        if (integer == 0) clearInterval(time);
    },1000);
}

Reigel 2010-07-08 05:37:07

Thank you so much. :D

Anonymous the Great 2010-07-08 05:42:11

@Anonymous the Great: As I've said, this is not fair! psychotik gave the right answer for this. You changed the question!

Emrah GOZCU 2010-07-08 05:44:36

Answer 6

A:

I'm guessing you want to show a number countdown in a specified input box. Let me give it a shot.

<html>
  <head>
    <script type="text/javascript">
    function countdown(count) {
      document.getElementById("cds").value = count;
      if (count > 0) {
        setTimeout("countdown(" + (count - 1) + ")", 1000);
      }
    }
    </script>
  </head>
  <body onload="countdown(10)">
    <input type="text" id="cds" value="0" />
  </body>
</html>

The trick is to put the recursion call in the setTimeout function and surround that with the condition that stops the countdown when 0 is reached.

Symen Timmermans 2010-07-08 05:56:38

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