Restarting a setInterval() in Javascript/jQuery (without clearInterval)
I'm working on ui tabs built using jQuery. Everything works except for one issue - I did a setInterval that runs a function that does a trigger("click") so that it goes to the next tab after 5000 miliseconds. It runs through each tab fine, the issue is that if the user manually clicks on a tab, the timer for the setInterval does not restart back at 0. For example if a user were to start on tab1 at 0 miliseconds and clicks on tab2 at 2000 miliseconds, the setInterval doesn't go back to 0, it would start at 2000 and run to 5000 miliseconds and would subsequently goto tab3. I understand why it's happening, I just wonder if there were a way to restart the setInterval timing without having to do a clearInterval() and creating an entirely new setInterval(). Any insight would be appreciated.
Update
Thanks for the replies - The reason I was trying to avoid using clearInterval was because I was having issues of how to write the code in a way where the clearInterval would stop the setInterval completely. The code is setup to track whenever a user has clicked a tab. The problem is the auto change function utilizes trigger('click'), so it runs the clearInterval function I wrote also when the tabs auto-c开发者_如何学编程hange. It seems to run fairly fine on its own, but once the user starts clicking on tabs, the setInterval behaves unusually and switches tabs unpredictably. I suspect what is happening is that several setIntervals are running at once... Here's the code (If you haven't guessed it already, I'm pretty new at javascript/jquery). I've commented out parts so that it's functional, but it still doesn't function as I intended (from first post).
// auto change tabs
if( options.interval ) {
function timerCom() {
if( !$(".controller").hasClass('paused') ) {
var i = $(".tab-current > a").attr("rel");
//alert(i);
if( i == 3 ) {i = 0};
$container
.find('a')
.eq(i)
.trigger('click');
}
}
//$("#promo-items > li > a").click(function () {
//var timer;
//if( timer != null ) {clearInterval(timer);}
timer = setInterval(timerCom, options.interval);
//});
}
No, there is no way to restart a timer set by setInterval
without clearing the timer.
You can't really alter intervals or timeouts, only clear them. That said it should be a simple thing to create a function that clears the interval, and then starts a new but identical one immediately with a fresh time value.
var intervalID;
var resetTimer = function() {
if (intervalID) { clearInterval(intervalID) };
intervalID = setInterval(function() {
console.log('doing stuff!');
}, 5000);
};
timer = setInterval(function() {
timerCom();
}, options.interval);
I know this post is well over 2 years old, but I ran into a similar problem just now, and I found a solution.
I was writing an image scroller that would automatically shift to the next image after a set amount of time, and whenever I clicked the navigation buttons, the transitions moved double-time.
Here's my solution:
Make the interval variable (timer
in your case) somewhat global.
i.e. in the options
section (assuming it was defined earlier, and then later assigned), add a null timer
variable.
var options = {
'interval',
//Other variables
'timer',
};
Then, call clearInterval
twice when you handle the click event.
$("#promo-items > li > a").click(function () {
if( options.timer != null ) {
clearInterval(options.timer);
clearInterval(options.timer);
}
options.timer = setInterval(timerCom, options.interval);
});
Worked like a charm for me.
Again, sorry if this is wayyyy too late.
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