Draft
This page is not complete.
This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The IntersectionObserver
interface's read-only thresholds
property returns the list of intersection thresholds that was specified when the observer was instantiated with IntersectionObserver()
. If only one threshold ratio was provided when instanitating the object, this will be an array containing that single value.
See Thresholds in Intersection Observer API to learn how thresholds work.
var thresholds = IntersectionObserver.thresholds;
An array of intersection thresholds, originally specified using the threshold
property when instantiating the observer. If only one observer was specified, without being in an array, this value is a one-entry array containing that threshold. Regardless of the order your original threshold
array was in, this one is always sorted in numerically increasing order.
If no threshold
option was included when IntersectionObserver()
was used to instantiate the observer, the value of thresholds
is simply [0]
.
Be careful! Although the options
object you can specify when creating an IntersectionObserver
has a field named threshold
, this property is called thresholds
. Confusing? Yes. If you accidentally use thresholds
as the name of the field in your options
, the thresholds
array will wind up being simply [0.0]
, which is likely not what you expect. Debugging chaos may ensue.
<<<...>>>
Specification | Status | Comment |
---|---|---|
Intersection Observer The definition of 'IntersectionObserver.thresholds' in that specification. | Working Draft | Initial definition |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 51 | 15 | 55
|
No | ? | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 51 | 51 | Yes | ? | ? | ? | 5.0 |
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserver/thresholds