hashchangeBaseline · Widely available
The hashchange event fires when the URL fragment identifier (the part of the URL starting with #) of the current page has changed.
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
1–15Not supported
16+Supportedsince Dec 13, 2011
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1–10Not supported
11+Supportedsince Mar 13, 2012
Current: 157Safari
1–5.1Not supported
6+Supportedsince Jul 25, 2012
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4–10Not supported
14+Supportedsince Jun 26, 2012
Current: 157Safari iOS
1–5Not supported
6+Supportedsince Sep 10, 2012
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: HashChangeEvent.
Feature detection
JS · check before using
if ("HashChangeEvent" in globalThis) {
// HashChangeEvent is available
} else {
// load a polyfill or use a fallback
}Documentation (MDN)
Specification
Usage share
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 |
|---|---|---|---|---|---|---|---|
| HashChangeEvent | 8 | 12 | 3.6 | 5 | 18 | 4 | 5 |
| HashChangeEvent.HashChangeEvent | 16 | 12 | 11 | 6 | 18 | 14 | 6 |
| HashChangeEvent.newURL | 8 | 12 | 6 | 5.1 | 18 | 6 | 5 |
| HashChangeEvent.oldURL | 8 | 12 | 6 | 5.1 | 18 | 6 | 5 |
| Window.hashchange_event | 4 | 12 | 3.6 | 5 | 18 | 4 | 5 |