when does settimeout execute the delayed code?

[petermichaux]

Hi,

setTimeout(code, delay)

When the delay of a setTimeout expires it is time to execute the code.
If the browser is executing some other JavaScript will the setTimeout
code interupt or wait until the browser is not busy doing other things?
(Can the browser execute mutliple threads?)

Thanks,
Peter

 

[Richard Cornford]

setTimeout(code, delay)

When the delay of a setTimeout expires it is time to
execute the code.
If the browser is executing some other JavaScript will
the setTimeout code interupt or wait
Wait.

until the browser is not busy doing other
things?

More or less, depending on the browser.

(Can the browser execute mutliple threads?)

A single browser window/ECMAScript global environment cannot execute
multiple threads (javascript is not multi-threaded). It may be possible
for different frames to act as different browsers and so be executing
script in one frame at the same time as executing script in another.
There is no evidence that current browsers do so.

Richard.