How do I start setInterval immediately?

How do I start setInterval immediately?

Use a named function and call it and assign it to the interval. var myFnc = function() { // Do something every 9 seconds }; setInterval(myFnc, 9000); myFnc(); The other option is to use setTimeout instead.

Does setInterval run immediately?

This property can be used in the callback of the setInterval() function, as it would get immediately executed once and then the actual setInterval() with this function will start after the specified delay.

What does setInterval do in JavaScript?

The setInterval() function is commonly used to set a delay for functions that are executed again and again, such as animations. You can cancel the interval using clearInterval() . If you wish to have your function called once after the specified delay, use setTimeout() .

How do you break out of setInterval?

Stopping the Function It’s meant to stop the timer set by using the setInterval JavaScript function. The setInterval() returns a variable called an interval ID. You can then use it to call the clearInterval() function, as it’s required by the syntax: clearInterval(intervalId);

How do you delay setInterval?

The syntax for this method is this: const timerID = setInterval(function, delay, arg1, arg2.) In this case, the delay is the time in milliseconds that the timer should delay successive executions of the function. The setInterval method also returns an ID which is used to clear the timer.

Does setInterval affect performance?

This is unlikely to make much of a difference though, and as has been mentioned, using setInterval with long intervals (a second is big, 4ms is small) is unlikely to have any major effects.

Is setInterval bad?

In case of time intensive synchronous operations, setTimeInterval may break the rhythm. Also, if any error occurs in setInterval code block, it will not stop execution but keeps on running faulty code. Not to mention they need a clearInterval function to stop it.

How do I get out of setInterval in Javascript?

Stopping the Function The setInterval() returns a variable called an interval ID. You can then use it to call the clearInterval() function, as it’s required by the syntax: clearInterval(intervalId);

What is the return value of setInterval?

The setInterval() returns a numeric, non-zero number that identifies the created timer. You can pass the intervalID to the clearInterval() to cancel the timeout.