setTimeout和函数调用的调度

Question

Given the following code, when will function go be executed?

setTimeout(go, 0);

Will it be added to the end of the Job Queue immediately, or added to the end of the Job Queue after the minimum interval for setTimeout ?

Answer 1

Most browsers implement a minimum delay time of 4ms. You can use lower values without error, but when actually executing the script, the browser will overwrite the timeout value.

https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout?redirectlocale=en-US&redirectslug=DOM%2Fwindow.setTimeout#Minimum.2F_maximum_delay_and_timeout_nesting

https://html.spec.whatwg.org/multipage/webappapis.html#timers

Answer 2

如果超时为0，则会立即将其添加到作业队列的末尾