setTimeout()Baseline · Widely available
The setTimeout() global function executes provided code after a given duration of time, and the accompanying clearTimeout() cancels the timer.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jul 29, 2015. Widely available since Jan 29, 2018.
Browser support
DesktopChrome
1–2Not supported
3+Supportedsince Sep 15, 2009
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1–3Not supported
3.5+Supportedsince Jun 30, 2009
Current: 157Safari
1–3.1Not supported
4+Supportedsince Jun 8, 2009
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4+Supportedsince Mar 29, 2011
Current: 157Safari iOS
1–4.2Not supported
5+Supportedsince Oct 12, 2011
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: clearTimeout.
Feature detection
JS · check before using
if ("setTimeout" in globalThis) {
// setTimeout is available
} else {
// load a polyfill or use a fallback
}Documentation (MDN)
Specification
Sub-features
Support for each part of the feature (5). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| clearTimeout | 1 | 12 | 1 | 4 | 18 | 4 | 1 |
| clearTimeout.worker_support | 3 | 12 | 3.5 | 4 | 18 | 4 | 5 |
| setTimeout | 1 | 12 | 1 | 1 | 18 | 4 | 1 |
| setTimeout.supports_parameters_for_callback | 1 | 12 | 1 | 1.2 | 18 | 4 | 1 |
| setTimeout.worker_support | 3 | 12 | 3.5 | 4 | 18 | 4 | 5 |