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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The IntersectionObserver method unobserve() instructs the IntersectionObserver to stop observing the specified target element.




The Element to cease observing. If the specified element isn't being observed, this method does nothing and no exception is thrown.

Return value



This snippet simply shows an observer being created, an element being observed, and then being unobserved.

var observer = new IntersectionObserver(callback);

/* ... */



Specification Status Comment
Intersection Observer
The definition of 'IntersectionObserver.unobserve()' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 51.0 No support[1] 55 (55)[2] No support ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 51.0 55.0 (55)[2] No support No support ? ? 51.0

[1] This feature is available since the Windows Insider Preview Build 14986.

[2] This feature has been implemented since Gecko 53.0 (Firefox 53.0 / Thunderbird 53.0 / SeaMonkey 2.50) behind the preference dom.IntersectionObserver.enabled, which was false by default. Enabled by default beginning in Firefox 55. See bug 1243846.

See also

Document Tags and Contributors

 Contributors to this page: Sheppy
 Last updated by: Sheppy,