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The HashChangeEvent
interface represents events that fire when the fragment identifier of the URL has changed.
The fragment identifier is the part of the URL that follows (and includes) the #
symbol.
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a:hover text { fill: #0095DD; pointer-events: all;}
Properties
This interface also inherits the properties of its parent, Event
.
HashChangeEvent.newURL
Read only- The new URL to which the window is navigating.
HashChangeEvent.oldURL
Read only- The previous URL from which the window was navigated.
Methods
This interface has no methods of its own, but inherits the methods of its parent, Event
.
Examples
Syntax options for a hash change
You can listen for the hashchange
event using any of the following options:
window.onhashchange = funcRef;
or
<body onhashchange="funcRef();">
or
window.addEventListener("hashchange", funcRef, false);
Basic example
function locationHashChanged() { if (location.hash === '#somecoolfeature') { somecoolfeature(); } } window.addEventListener('hashchange', locationHashChanged);
Polyfill
There are several fallback scripts listed on the Modernizr GitHub page. Basically, those scripts check the location.hash
at a regular interval. Here is a version that allows only one handler to be bound to the onhashchange
property:
;(function(window) { // Exit if the browser implements that event if ( "onhashchange" in window.document.body ) { return; } var location = window.location, oldURL = location.href, oldHash = location.hash; // Check the location hash on a 100ms interval setInterval(function() { var newURL = location.href, newHash = location.hash; // If the hash has changed and a handler has been bound... if ( newHash != oldHash && typeof window.onhashchange === "function" ) { // Execute the handler window.onhashchange({ type: "hashchange", oldURL: oldURL, newURL: newURL }); oldURL = newURL; oldHash = newHash; } }, 100); })(window);
Specifications
Specification | Status | Comment |
---|---|---|
HTML Living Standard The definition of 'HashChangeEvent' in that specification. |
Living Standard | Initial definition |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
HashChangeEvent | Chrome Full support 5 | Edge Full support Yes | Firefox Full support 3.6 | IE Full support 8 | Opera Full support 10.6 | Safari Full support 5 | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 4 | Opera Android Full support 11 | Safari iOS Full support 5 | Samsung Internet Android ? |
newURL | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 6 | IE No support No | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
oldURL | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 6 | IE No support No | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown