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Learn how to use the setTimeout() method to call a function after a specified delay in milliseconds. See examples, syntax, parameters, return value, and browser support.
- Nested Timeouts
- Timeouts in Inactive Tabs
- Throttling of Tracking Scripts
- Late Timeouts
- Deferral of Timeouts During pageload
- GeneratedCaptionsTabForHeroSec
As specified in the HTML standard, browsers will enforce a minimum timeout of 4 milliseconds once a nested call to setTimeouthas been scheduled 5 times. This can be seen in the following example, in which we nest a call to setTimeout with a delay of 0milliseconds, and log the delay each time the handler is called. The first four times, the delay is...
To reduce the load (and associated battery usage) from background tabs, browsers will enforce a minimum timeout delay in inactive tabs. It may also be waived if a page is playing sound using a Web Audio API AudioContext. The specifics of this are browser-dependent: 1. Firefox Desktop and Chrome both have a minimum timeout of 1 second for inactive t...
Firefox enforces additional throttling for scripts that it recognizes as tracking scripts. When running in the foreground, the throttling minimum delay is still 4ms. In background tabs, however, the throttling minimum delay is 10,000 ms, or 10 seconds, which comes into effect 30 seconds after a document has first loaded. See Tracking Protectionfor ...
The timeout can also fire later than expected if the page (or the OS/browser) is busy with other tasks. One important case to note is that the function or code snippet cannot be executed until the thread that called setTimeout()has terminated. For example: Will write to the console: This is because even though setTimeoutwas called with a delay of z...
Firefox will defer firing setTimeout() timers while the current tab is loading. Firing is deferred until the main thread is deemed idle (similar to window.requestIdleCallback()), or until the load event is fired.
Learn how to use the global setTimeout() method to set a timer that executes a function or code after a specified delay. See the syntax, parameters, return value, description, and examples of this method.
Jan 22, 2024 · The setTimeout() method calls a function after several milliseconds. setTimeout() is for executing a function once after a specified delay. Syntax: setTimeout(function, delay); Parameters: function: The function or code snippet to be executed after the specified delay.
Apr 27, 2021 · Learn how to use the built-in JavaScript method setTimeout() to execute a function after a specified time. See examples, syntax, and how to cancel a timeout with clearTimeout().
Learn how to use the setTimeout() method to execute a block of code after a specified time. See examples of displaying text, time, and passing arguments to the function.
Learn how to use the window object methods setTimeout() and setInterval() to execute code at specified time intervals. See examples of how to start, stop and clear timing events with buttons and alerts.
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Oct 3, 2022 · Learn how to use setTimeout and setInterval methods to execute a function after a certain delay or repeatedly at a fixed interval. See examples, differences, and tips for nested setTimeout and cancellation.
