Change interval of setInterval [duplicate]

Question

Is there a way of modifying the interval of calls of function set with setInterval during runtime, other than removing it (clearInterval) and reinstating again with a different value?

Answer 1

Use setTimeout instead, additionally this a non-blocking method for async JS:

var interval = 1000;

function callback() {
   console.log( 'callback!' );
   interval -= 100; // actually this will kill your browser when goes to 0, but shows the idea
   setTimeout( callback, interval );
}

setTimeout( callback, interval );

Don't use setInterval, as in some cases (lots of setInterval + long callbacks, which are usually longer than timeout), due to limited queue size, some callbacks will be dropped by the browser and never executed. Only setTimeout guarantees execution.