DoneJS StealJS jQuery++ FuncUnit DocumentJS
4.3.0
5.0.0 3.13.1 2.3.35
  • About
  • Guides
  • API Docs
  • Community
  • Contributing
  • Bitovi
    • Bitovi.com
    • Blog
    • Design
    • Development
    • Training
    • Open Source
    • About
    • Contact Us
  • About
  • Guides
  • API Docs
    • Observables
      • can-bind
      • can-compute
      • can-debug
      • can-define
      • can-define/list/list
      • can-define/map/map
      • can-define-backup
      • can-define-stream
      • can-define-stream-kefir
      • can-event-queue
      • can-kefir
      • can-list
      • can-map
      • can-map-define
      • can-observation
      • can-observation-recorder
      • can-observe
      • can-simple-map
      • can-simple-observable
      • can-stream
      • can-stream-kefir
      • can-value
        • methods
          • bind
          • from
          • returnedBy
          • to
          • with
    • Data Modeling
      • can-connect
      • can-connect-feathers
      • can-fixture
      • can-fixture-socket
      • can-ndjson-stream
      • can-set
    • Views
      • can-component
      • can-stache
      • can-stache-bindings
      • can-stache-converters
      • can-stache-route-helpers
      • can-view-autorender
      • can-view-callbacks
      • can-view-import
      • can-view-live
      • can-view-model
      • can-view-nodelist
      • can-view-parser
      • can-view-scope
      • can-view-target
      • react-view-model
      • react-view-model/component
      • steal-stache
    • Routing
      • can-deparam
      • can-param
      • can-route
      • can-route-hash
      • can-route-mock
      • can-route-pushstate
    • JS Utilities
      • can-assign
      • can-define-lazy-value
      • can-diff
      • can-globals
      • can-join-uris
      • can-key
      • can-key-tree
      • can-make-map
      • can-parse-uri
      • can-queues
      • can-string
      • can-string-to-any
      • can-util
      • can-zone
      • can-zone-storage
    • DOM Utilities
      • can-ajax
      • can-attribute-encoder
      • can-child-nodes
      • can-control
      • can-dom-data
      • can-dom-events
      • can-dom-mutate
      • can-event-dom-enter
      • can-event-dom-radiochange
      • can-fragment
    • Data Validation
      • can-define-validate-validatejs
      • can-validate
      • can-validate-interface
      • can-validate-legacy
      • can-validate-validatejs
    • Typed Data
      • can-cid
      • can-construct
      • can-construct-super
      • can-data-types
      • can-namespace
      • can-reflect
      • can-reflect-dependencies
      • can-reflect-promise
      • can-types
    • Polyfills
      • can-symbol
      • can-vdom
    • Core
    • Infrastructure
      • can-global
      • can-test-helpers
    • Ecosystem
    • Legacy
  • Community
  • Contributing
  • GitHub
  • Twitter
  • Chat
  • Forum
  • News
Bitovi

to

  • Edit on GitHub

Get an observable for setting (but not getting) a property on an object.

value.to( object, keyPath )

In the example below, a keyObservable is created that is one-way bound to the value at outer.inner.key. When keyObservable.value changes, outer.inner.key is updated, but changes to outer.inner.key do not update keyObservable.value.

import DefineMap from "can-define/map/map";
import value from "can-value";

const outer = new DefineMap({
  inner: {
    key: "hello"
  }
});

const keyObservable = value.to(outer, "inner.key");

keyObservable.value = "aloha";
// outer.inner.key === "aloha"

Parameters

  1. object {Object}:

    The object from which to read.

  2. keyPath {String}:

    A String of dot-separated keys, representing a path of properties.

Returns

{Object}:

An observable compatible with setValue but not getValue; it also has a value property that can be used to set the value.

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 4.3.0.

On this page

Get help

  • Chat with us
  • File an issue
  • Ask questions
  • Read latest news