W3cubDocs

/Angular

IterableDiffer

interface

A strategy for tracking changes over time to an iterable. Used by NgForOf to respond to changes in an iterable by effecting equivalent changes in the DOM.

interface IterableDiffer<V> {
  diff(object: NgIterable<V>): IterableChanges<V> | null
}

Class implementations

Methods

Compute a difference between the previous state and the new object state.

diff(object: NgIterable<V>): IterableChanges<V> | null

Parameters
object NgIterable<V>

containing the new value.

Returns

IterableChanges<V> | null: an object describing the difference. The return value is only valid until the next diff() invocation.

© 2010–2023 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/api/core/IterableDiffer