Angular2: changing value of input

Question

In my input I enter 123. On submit I want to have 456.

How to change an input value?

My HTML (Ionic2)

<ion-textarea [ngFormControl]="message"></ion-textarea>

JavaScript

this.message.value = '456';
console.log('>>>', this.message.value); // output is '123'

Answer 1

Use 2 way binding Something like:

<ion-textarea [(ngFormControl)]="message"></ion-textarea>