Dojo 2 How to achieve two-way binding for input? - dojo2

Question

How to achieve 2 way data binding for input in dojo 2?
handleChange = (e) => {
this.setState({ textValue: e.target.value });}
<Input name='title' defaultValue={this.state.textValue} placeholder='title...' onChange={this.handleChange} />
I know this is how we do in React but don't know how to achieve in dojo 2.

Answer 1

In fact React supports only one-way binding, and your example illustrates it well. You need to update state, to re-render react component.
And as far as I understood from dojo2 docs and tutorials, there is almost same approach under the hood. Take a look here
Dojo 2 is built around unidirectional, top-down property propagation where it is the parent widget’s job to pass properties down to its children. In fact, a child widget has no direct reference to a parent widget! When a property changes, widgets are re-rendered (using an efficient virtual DOM) to reflect the updated state.
And it may look like this:
private _addWorker() {
this._workerData = this._workerData.concat(this._newWorker);
this._newWorker = {};
this.invalidate();
}
You change data and call invalidate() to re-render widget.

Answer 2

This is the solution to achieve 2 way data binding in Dojo 2.
InputWidget:-
interface IInputProps {
value: string;
onChange(event: Event): void;
}
export class InputWidget extends WidgetBase<IInputProps> {
private _onChange (event: Event) {
event.stopPropagation();
this.properties.onChange && this.properties.onChange((event.target as HTMLInputElement).value);
}
protected render(): DNode {
const { value } = this.properties;
return v('input', {
key: "input",
type: "text",
value
onchange: this._onChange
});
}
}
InputWrapper widget:-
export class InputWrapper extends WidgetBase<IWrapperProps> {
private inputValue: string = '';
protected inputValueChanges(value: string) {
this.inputValue = value;
this.invalidate();
}
protected render(): DNode {
<div>
{w(InputWidget, {onchange: this.inputValueChanges, value: this.inputValue })}
<span>Input Value:- {this.inputValue}</span>
</div>
}
}
This is the solution to achieve 2 way data binding in Dojo 2.
Hope this will be helpful! :(