I have a simple countdown using setinterval and I get the error that my functions are not defined. I am using the buttons to start and stop the intervals. Any ideas why this happens?
Javascript
function startCount() {
$(function() {
var count = 10;
countdown = setInterval(function() {
$("p.countdown").html(count + " seconds remaining!");
if (count === 0) {
window.location = 'http://google.com';
}
count--;
}, 1000);
});
}
function startStop() {
clearInterval(countdown);
}
html
<p class="countdown"></p>
<button onclick="startCount()">Start</button>
<button onclick="startStop()">Stop</button>
demo
http://jsfiddle.net/54uQz/1/
Declare your countdown variable outside the startCount() function so that it is visible to both functions. At the moment it only exists in the first, so clearing the timer does nothing.
CODE:
var countdown;
function startCount() {
var count = 10;
countdown = setInterval(function() {
$("p.countdown").html(count + " seconds remaining!");
if (count === 0) {
window.location = 'http://google.com';
}
count--;
}, 1000);
}
function startStop() {
clearInterval(countdown);
}
The Updated Fiddle Example!
Related
If I can try to make everyone understand what I am looking for, I am looking for the value of the interval to change to lets say "5000ms" after "1000ms" and then it would go on to the next value such as "2000ms" and repeat all over again! The current code I have is pretty much a stopwatch, It adds the number 1 to a paragraph every 1000ms. Any help is extremely appreciated!
<script>
function myFunction() {
clicks += 1;
}
setInterval(myFunction, 1000);
var clicks = 0;
function myFunction() {
clicks += 1;
document.getElementById("demo").innerHTML = clicks;
// connects to paragraph id
}
</script>
<p id="demo"></p>
<!--connects to getElementById-->
Don't use setInterval - this functions will perform the action in any given interval, which you set once.
Use setTimeout instead. Which performs the action only once after given interval, and then call it again and again with different interval values.
what about this
<script>
var clicks = 0;
myFunction(1000);
function myFunction( currentInterval ) {
clicks ++;
document.getElementById("demo").innerHTML = clicks;
if ( currentInterval == 1000 )
{
currentInterval = 5000;
}
else if ( currentInterval == 5000 )
{
currentInterval = 2000;
}
else
{
currentInterval = 1000;
}
setTimeout( function(){ myFunction( currentInterval ) }, currentInterval );
}
</script>
<p id="demo"></p>
you should try using recursive timeout instead of interval
var timeout = 1000;
var timer;
function startTimer() {
clearTimeout(timer);
timer = setTimeout(function() {
console.log('tick');
startTimer();
}, timeout);
}
startTimer();
// timeout = 2000
// timeout = 500
// clearTimeout(timer); to cancel
<script src="https://getfirebug.com/firebug-lite-debug.js"></script>
This might look a little complicated but you can try something like this:
JSFiddle.
(function() {
var interval = null;
var limit = 5;
function initInterval(callback, index) {
var msToSec = 1000;
if (interval) {
clearInterval();
}
console.log("Delay: ", index)
interval = setInterval(callback, index * msToSec);
}
function clearInterval() {
window.clearInterval(interval);
interval = null;
}
function resetInterval(callback, count) {
clearInterval();
initInterval(callback, count);
}
function main() {
var count = 1;
var notify = function() {
console.log("Hello World: ", count);
var _nextCount = ((count++) % limit) + 1;
if (count < 10) {
resetInterval(notify, _nextCount);
} else {
console.log("Stoping loop...");
clearInterval();
}
}
initInterval(notify, count);
}
main()
})()
I have this countDown, each time I press the buttons I want to add 5 more seconds.
When the time is updated the function count down the new value but the old value as well.
Can someone explain me why?
http://jsfiddle.net/xqdj3uz8/1/
$('button').on('click', function() {
var newtime = parseInt(seconds + 5);
timer(newtime);
});
You could try by using a global variable to track the amount of seconds left. Clicking on the button will increment this variable.
var timeLeft = 10;
function timer() {
var i = setInterval(function () {
$('span').text(timeLeft);
timeLeft--
if (timeLeft === 0) clearInterval(i)
}, 1000)
}
function addSeconds(n) {
timeLeft += n
}
timer()
$('button').on('click', function () {
addSeconds(5)
});
Demo (1): http://jsfiddle.net/xqdj3uz8/21/
please use it
function timer(time) {
var interval = setInterval(countDown, 1000);
function countDown() {
time--;
$('span').text(time);
if(time === 0) {
clearInterval(interval);
}
}
$('button').on('click', function() {
time=parseInt(time + 5);
$('span').text(time);
});
}
var seconds = 5;
timer(seconds);
Try This
Working JSFIDDLE
var gblTime=0;
function timer(time) {
var interval = setInterval(countDown, 1000);
gblTime = time;
function countDown() {
gblTime--;
$('span').text(gblTime);
if(gblTime <= 0) {
clearInterval(interval);
}
}
}
var seconds = 5;
timer(seconds);
$('button').on('click', function() {
gblTime = parseInt(gblTime +1+ 5);
//timer(newtime);
});
You are adding new intervals that are independent form each other, try:
var time = 5;
var seconds = 5;
function timer() {
var interval = setInterval(countDown, 1000);
function countDown() {
$('span').text(time);
if(time === 0) {
clearInterval(interval);
}
time--;
}
}
timer();
$('button').on('click', function() {
if(time==0){
timer();
}
time += seconds;
});
I have a Javascript countdown timer in my page. Once the counter reachers zero, I want to redirect the user to another page. However, my page is entering a redirect loop and keeps redirecting to itself.
var count=20;
setInterval(timer, 1000);
function timer()
{
if(count > 0)
{
count = count - 1;
}
else
window.location = "<?= site_url('quiz/complete/' . $session->id); ?>";
document.getElementById("timer").innerHTML = count;
}
You need to remove interval by clearInterval() function. Something like:
var count=20;
var interval = setInterval(timer, 1000);
function timer()
{
if(count > 0)
{
count = count - 1;
}
else {
clearInterval(interval);
window.location = "<?= site_url('quiz/complete/' . $session->id); ?>";
}
document.getElementById("timer").innerHTML = count;
}
Here is another simple solution with pure JavaScript displaying the countdown timer using setInterval() function:
// Countdown timer for redirecting to another URL after several seconds
var seconds = 7; // seconds for HTML
var foo; // variable for clearInterval() function
function redirect() {
document.location.href = 'http://bubencode.com';
}
function updateSecs() {
document.getElementById("seconds").innerHTML = seconds;
seconds--;
if (seconds == -1) {
clearInterval(foo);
redirect();
}
}
function countdownTimer() {
foo = setInterval(function () {
updateSecs()
}, 1000);
}
countdownTimer();
See it working on JSFiddle here: http://jsfiddle.net/bubencode/dn6xc932/
I hope you will find it helpful.
I'm officially stuck. I can't seem to get the stopTimer() function to work properly. Any help would be greatly appreciated. Thanks!
http://jsfiddle.net/4Efbd/1/
var counter;
function stopTimer() {
window.clearInterval(counter);
$('#queryTimer').html('');
}
function startTimer() {
var count = 60;
var counter = setInterval(function () {
count = count - 1;
if (count <= 0) {
window.clearInterval(counter);
return;
}
$('#queryTimer').html('Requery in:' + count + ' Seconds.');
}, 1000);
}
$('#start').click(function () {
startTimer();
});
$('#stop').click(function () {
stopTimer();
});
var counter = setInterval(function () {
That says "create a new variable counter". This means that the existing variable never gets changed, so clearInterval doesn't have the right identifier to clear it. You want to use the existing variable:
counter = setInterval(function () {
I want my countdown to stop on the click of a submit button, i searched in some pages,
but I didn't found anything.
Here is the code i want to stop on click
function countDown (count) {
if (count > 0) {
var d = document.getElementById("countDiv");
d.innerHTML = count;
setTimeout (function() { countDown(count-1); }, 1000);
document.getElementById('tiempo').value = count;
}
else
document.location = "timeover.php";
}
document.getElementById("palabra").focus();
countDown(5);
</script>
You have to save reference to timeout (actually return value of timeout will be number) and use it to cancel timeout.
var timeout = window.setTimeout(function () {
// do something
}, 1000);
// clear timeout
window.clearTimeout(timeout);
You probably got the idea. By the way, you should probably look at setInterval method since it would be better in this situation. Interval will "tick" as long until you cancel it.
Try something like this:
var stopped = false;
function countDown (count) {
if (count > 0) {
var d = document.getElementById("countDiv");
d.innerHTML = count;
document.getElementById('tiempo').value = count;
if (!stopped) {
setTimeout (function() { countDown(count-1); }, 1000);
}
}
else
document.location = "timeover.php";
}
document.getElementById("palabra").focus();
document.getElementById("mySubmitId").onclick = function () {
stopped = true;
};
countDown(5);