javascript - How to pass ID of setInterval() to anonymous funtion - Stack Overflow

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I'm looking to pass the handler of setInterval() to the internal function.

For example:

var id = setInterval(myfunction, "100000");

I'm looking to pass id to myfunction

I tried

setInterval(myfunciton(e), "10000");

but it didn't pass the variable.

Any ideas?

I'm looking to pass the handler of setInterval() to the internal function.

For example:

var id = setInterval(myfunction, "100000");

I'm looking to pass id to myfunction

I tried

setInterval(myfunciton(e), "10000");

but it didn't pass the variable.

Any ideas?

• javascript
• function
• setinterval
• anonymous

Share Improve this question Follow edited Aug 10, 2015 at 20:03 Hannes Johansson 1,80222 gold badges1616 silver badges2828 bronze badges asked Aug 10, 2015 at 19:46 axwegeaxwege 861111 bronze badges 1

• Unless I misunderstood you, you can't pass a parameter that isn't even defined yet... – Maria Ines Parnisari Commented Aug 10, 2015 at 19:48

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2 Answers 2

Sorted by: Reset to default 12

The id doesn't exist when you call setInterval, but it does exist by the time that the callback is called.

You would need to wrap the call in a function that uses the id in a call:

var id = setInterval(function(){
  myfunction(id);
}, 10000);

If you include the variable in the callback as it's passed in to setInterval, the callback is immediately executing with that argument.

What you need to do is create a closure:

setInterval(function() {
  myFunction(e);
}, 10000);

Also, the interval should be an integer, not a string.

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