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IntersectionObserverEntry.target

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 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.
Editor's Draft Initial definition

Browser compatibility

FeatureChromeFirefoxEdgeInternet ExplorerOperaSafari
Basic Support51

53 — 551

55

15(No)??
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support5151(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.

Document Tags and Contributors

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