Solved

Jaavscript Timer Help

Posted on 2008-09-29
6
231 Views
Last Modified: 2012-06-21
Hello Experts,

Below is a javascript countdown. Now what I am trying to do is to call the function after a certain process. In the attach code snippets I just put a an alert then after the countdown timer should be called again. How can I do this.  If you have a better approach is solving my problem that will be cool.

TIA,
gladxml


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script> 
<!-- 
// 
 var milisec=0 
 var seconds=30
// var myCounter = document.getElementById('d2'); 
// myCounter.value='60' 
function display(){
var myCounter = document.getElementById('d2');
myCounter.value = '30'
 if (milisec<=0){ 
    milisec=9 
    seconds-=1 
 } 
 if (seconds<=-1){ 
    milisec=0 
    seconds+=1 
 } 
 else 
 {
    milisec-=1 
    myCounter.value=seconds+"."+milisec 
    setTimeout("display()",100) 
 }
 if (myCounter.value == '0.0')
 {
	alert('call the function again');
	display();
 }
} 
-->  
</script> 
<title>Untitled Document</title>
</head>
 
<body>
<form name="MyForm" action="response_normal.asp" method="post">
	<input type="text" size="8" name="d2" id="d2"><br />
</form>
<div id="MyResult"></div>
<script>
display();
</script>
 
</body>
</html>

Open in new window

0
Comment
Question by:gladxml
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
6 Comments
 
LVL 15

Author Comment

by:gladxml
ID: 22602505
To make it clearer
I want to call the countdown timer function again after a certain process. SO that the process will just loop again and again. In my example after the alert message the timer function must be triggered.

TIA,
gladxml
0
 
LVL 1

Expert Comment

by:Pronca
ID: 22602945

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<script> 
<!-- 
// 
 var milisec=0 
 var seconds=30
// var myCounter = document.getElementById('d2'); 
// myCounter.value='60' 
function display(){
var myCounter = document.getElementById('d2');
myCounter.value = '30'
 if (milisec<=0){ 
    milisec=9 
    seconds-=1 
 } 
 if (seconds<=-1){ 
    milisec=0 
    seconds+=30+1 
 } 
 else 
 {
    milisec-=1 
    myCounter.value=seconds+"."+milisec 
    setTimeout("display()",100) 
 }
 if (myCounter.value == '0.0')
 {
        alert('call the function again');
        setTimeout("display()",0)
 }
} 
-->  
</script> 
<title>Untitled Document</title>
</head>
 
<body>
<form name="MyForm" action="response_normal.asp" method="post">
        <input type="text" size="8" name="d2" id="d2"><br />
</form>
<div id="MyResult"></div>
<script>
display();
</script>
 
</body>
</html>

Open in new window

0
 
LVL 1

Accepted Solution

by:
Pronca earned 500 total points
ID: 22602958
To clarify my post:

You have to reset the number of seconds to 30+1 (because it will decrement due to milisec == 0). Then you can call display() again. I put display() inside another setTimeout() but it doesn't need to be. All you need to do is reset the seconds.
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 15

Author Comment

by:gladxml
ID: 22603145
Ok thanks....

What I did is like this

        alert('call the function again');
        milisec=0 ;
        seconds=30;
        display();

Just need to know if there is are other ways to create a timer function.  Do you know any?

0
 
LVL 15

Author Comment

by:gladxml
ID: 22603171
I have notice when I run the code on the second or third call of he function the timer run faster than the usual. Do you have any idea why it is like that?
0
 
LVL 15

Author Closing Comment

by:gladxml
ID: 31501442
Thanks anyway. Not sure how to fix the timer speed on the next loop. Just need to find a new timer function
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article discusses the difference between strict equality operator and equality operator in JavaScript. The Need: Because JavaScript performs an implicit type conversion when performing comparisons, we have to take this into account when wri…
Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question