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.
takeRecords() returns an array of
IntersectionObserverEntry objects, one for each targeted element which has experienced an intersection change since the last time the intersections were checked, either explicitly through a call to this method or implicitly by an automatic call to the observer's callback.
If you use the callback to monitor these changes, you don't need to call this method. Calling this method clears the pending intersection list, so the callback will not be run.
intersectionObserverEntries = IntersectionObserver.takeRecords();
An array of
IntersectionObserverEntry objects, one for each target element whose intersection with the root has changed since the last time the intersections were checked.
The definition of 'IntersectionObserver.takeRecords()' in that specification.
|Editor's Draft||Initial definition.|
|Feature||Chrome||Edge||Firefox (Gecko)||Internet Explorer||Opera||Safari (WebKit)|
|Basic support||51.0||No support||55 (55)||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)||No support||No support||?||?||51.0|
 This feature is available since the Windows Insider Preview Build 14986.
 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.