Is there a way to check if a var is using setInterval()?
There is no direct way to do what you are looking for. Instead, you could set timer
to false every time you call clearInterval
:
// Start timer
var timer = setInterval(fncName, 1000);
// End timer
clearInterval(timer);
timer = false;
Now, timer
will either be false or have a value at a given time, so you can simply check with
if (timer)
...
If you want to encapsulate this in a class:
function Interval(fn, time) {
var timer = false;
this.start = function () {
if (!this.isRunning())
timer = setInterval(fn, time);
};
this.stop = function () {
clearInterval(timer);
timer = false;
};
this.isRunning = function () {
return timer !== false;
};
}
var i = new Interval(fncName, 1000);
i.start();
if (i.isRunning())
// ...
i.stop();
Well you can do
var interval = setInterval(function() {}, 1000);
interval = clearInterval(interval);
if (typeof interval === 'undefined'){
...
}
but what are you actually trying to do? clearInterval function is an always success function and it will always return undefined even if you call it with a NaN value, no error checking in there.
The return values from setTimeout
and setInterval
are completely opaque values. You can't derive any meaning from them; the only use for them is to pass back to clearTimeout
and clearInterval
.
There is no function to test whether a value corresponds to an active timeout/interval, sorry! If you wanted a timer whose status you could check, you'd have to create your own wrapper functions that remembered what the set/clear state was.
I did this like below, My problem was solved. you should set the value like "false", when you clearTimeout the timer.
var timeer=false;
----
----
if(timeer==false)
{
starttimer();
}
-----
-----
function starttimer()
{
timeer_main=setInterval(activefunction, 1000);
timeer=true;
}
function pausetimer()
{
clearTimeout(timeer_main);
timeer=false;
}