Suppose I have two screens:   Screen A Screen B   I am initially landed on Screen A. When I click on a Button I navigate to Screen B. When I press Back Button, I am again navigated to Screen A.  I want to call an action creator when I am navigated to...
I have a Canvas component, which looks approximately like this:    class Canvas extends React.Component{      saveRef = node => {         this._canvas = node;     }          shouldComponentUpdate(){         /*I will never re-render this component*...
I'm new to this world and I need to understand some of the concepts of Backbone and Marionette. Here I'm trying to explain some of the concepts I'm learning. It would be great to having some feedback on them.  The render function defines...
I have my angular app set up with an ng-view directive in the index.html, with views configured with $routeProvider config and each view having its own controller. In one view controller, I have a $rootScope.$on listener that watches for events. I ex...
I am using recompose in my React project https://github.com/acdlite/recompose/  It's a great library. I'm using the compose utility as a container component that passes state down as props to the presentational component like so:  const enhan...
Using React and Redux, imagine you have a component method that sends a request to an external API.  import React, { Component } from 'react'; import { connect } from 'react-redux';  class MyComp extends Component {    boolUpdate (val...
I have this code in my pure component:    componentDidUpdate(prevProps) {     const { scheduleSheet } = this.props;     const { scheduleSheet: prevScheduleSheet } = prevProps;      if (scheduleSheet !== prevScheduleSheet) {       this.setState({ boar...
In my [email protected] project I got a problem with the unmount setState change warning, but component is already mounted.  This is the application structure:  /app   /container      /veil      /router         /routed-view         /other-routed-view   Also...
Never used Vue.js before. I have one parent component and 2 child components. These 2 child components should interact with asynchronous actions using the native Vue event bus system (with a dummy Vue object used as a shared container for the event b...
Ok so this question is a bit tricky. I have been thinking about whether this is even correct concept wise, considering React is supposed to be a one-way flow of data, from parent to children, and not viceversa. But I would like to post the question a...

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