Vue sets all the properties in the data option to setters/getters to make them reactive. See Reactivity in depth Since you want myArray to be static you can create it as a custom option which can be accessed using vm.$options export default{ data() { return{ someReactiveData: [1, 2, 3] } }, //custom option name myArray … Read more
If you are trying to communicate from a parent component to a child component, this is pretty clearly described using @Input and EventEmitters with @Output in the angular docs. Angular 2 component interaction As for communication across siblings, I posted an answer in a similar question that might help with the issue of sharing data … Read more
I guess the “simplest” approach would be to do something like… @Override public void paintComponent(Graphics g) { super.paintComponent(g); Image scaled = img.getScaledInstance(getWidth(), getHeight(), Image.SCALE_SMOOTH); g.drawImage(scaled, 0, 0, null); } This is inefficient, costly and may not produce the desired results To start with, take a look at The Perils of Image.getScaledInstance() You could also take … Read more
You will want to use the “ngAfterViewInit” lifecycle hook, through importing AfterViewInit (https://angular.io/docs/ts/latest/guide/lifecycle-hooks.html#!#afterview). You can use it as shown below: Installation: tsd install jquery –save or typings install dt~jquery –global –save Utilization: import { Component, AfterViewInit } from ‘@angular/core’; import * as $ from ‘jquery’; ngAfterViewInit() { this.doJqueryLoad(); this.doClassicLoad(); $(this.el.nativeElement) .chosen() .on(‘change’, (e, args) => … Read more
Register the EventEmitter in your child component as the @Output: @Output() onDatePicked = new EventEmitter<any>(); Emit value on click: public pickDate(date: any): void { this.onDatePicked.emit(date); } Listen for the events in your parent component’s template: <div> <calendar (onDatePicked)=”doSomething($event)”></calendar> </div> and in the parent component: public doSomething(date: any):void { console.log(‘Picked date: ‘, date); } It’s also … Read more
2022 Update You only need a class component when you: need to create an error boundary using componentDidCatch Original 2016 Answer You only need a class component when you: need the component state or need the lifecycle methods. such as componentDidMount etc.
[It is important to understand that the ISite technique below only works at design time. Because ContainerControl is public and gets assigned a value VisualStudio will write initialization code that sets it at run-time. Site is set at run-time, but you can’t get ContainerControl from it] Here’s an article that describes how to do it … Read more
You would need to pass down each prop individually for each function that you needed to call <CreateProfile onFirstNameChange={this.firstNameChange} onHide={close} show={this.state.showModal} /> and then in the CreateProfile component you can either do const CreateProfile = ({onFirstNameChange, onHide, show }) => {…} with destructuring it will assign the matching property names/values to the passed in variables. … Read more
(Full disclosure: This question is an offshoot of Creating custom view) You can create constructors beyond the three standard ones inherited from View that add the attributes you want… MyComponent(Context context, String foo) { super(context); // Do something with foo } …but I don’t recommend it. It’s better to follow the same convention as other … Read more
Vue 3 Same as the Vue 2.6 example below except: $listeners has been merged into $attrs so v-on=”$listeners” is no longer necessary. See the migration guide. $scopedSlots is now just $slots. See migration guide. Vue 2.6 (v-slot syntax) All ordinary slots will be added to scoped slots, so you only need to do this: <wrapper> … Read more