Difference between SetInterval() and SetTimeout ()?

Question

hi guys help me please!

Answer 1

+ setTimeout() run the callback function passed as argument only once (after specified amount of time in milliseconds)

+ setInterval() run the callback function infinitly, waiting for the amount of time specified between execution ended and next call...

+ setInterval() could be emulated with setTimeout() if called inside callback function:

function callback() {
/* do something */
}
setInterval(callback,200);

... is equivalent to:

function callback() {
/* do something */
setTimeout(callback,200);
}
setTimeout(callback,200);

Answer 2

SetInterval() is if you want the program to wait x amount of time before it does Y. SetTimeout() waits x amount of time and does Y. SetInteral() is for loops.

Answer 3

Note that whilst setInterval by itself is infinite, you can stop it with clearInterval based on your chosen criteria.

Answer 4

@Duncan: that's not a deep difference between setInterval and setTimeout, as setTimeout have its own similar clearTimeout(), even it's less often required ;)

Answer 5

Thanks