This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The IntersectionObserverEntry
interface's read-only target
property indicates which targeted Element
has changed its amount of intersection with the intersection root.
Syntax
var target =
IntersectionObserverEntry.target;
Value
The IntersectionObserverEntry
's target
property specifies which Element
previously targeted by calling IntersectionObserver.observe()
experienced a change in intersection with the root.
Example
In this simple example, each targeted element's opacity
is set to its intersectionRatio
.
function intersectionCallback(entries) { entries.forEach(function(entry) { entry.target.opacity = entry.intersectionRatio; }); }
To see a more concrete example, take a look at Handling intersection changes in Timing element visibility with the Intersection Observer API.
Specifications
Specification | Status | Comment |
---|---|---|
Intersection Observer The definition of 'IntersectionObserverEntry.target' in that specification. |
Working Draft | Initial definition |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 51 | 15 | 53 — 551 55 | No | ? | ? |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 51 | 51 | Yes | ? | No | ? | ? |
1. From version 53 until version 55 (exclusive): this feature is behind the dom.IntersectionObserver.enabled
preference (needs to be set to true
). To change preferences in Firefox, visit about:config.