Two-way data binding with Angular
One of the most famous rumors about Angular 2 was that the two-way data binding functionality was removed because of the enforced unidirectional data flow. This is not exactly true; the Angular's form module implements a directive with the selector [(ngModel)]
(we'll also refer to this directive as NgModel
, because of the name of its controller), which allows us to easily achieve data binding in two directions: from the view to the model and from the model to the view.
Let's take a look at the following simple component:
// ch6/ts/simple-two-way-data-binding/app.ts import {Component, NgModule} from '@angular/core'; import {BrowserModule} from '@angular/platform-browser'; import {FormsModule} from '@angular/forms'; ...
Get Getting Started with Angular - Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.