Basically, I have used constructor in React for only 3 reasons -  1. To initialize state like -  class App extends React.Component {     constructor(props) {         super(props);         this.state = { counter: 0 };     } }   but due to Babel's...
I've imported a custom component into my screen and rendered it in the render() function. Then, created a ref to that custom component. Now, the render() function simply looks like this.  render() {   return (     <View>       <MyCompone...
We are trying to scroll to a specific component when the user closes another component.   Our example is very similar to that down below, taken from https://reactjs.org/docs/refs-and-the-dom.html#exposing-dom-refs-to-parent-components  function Custo...
I am having difficulty using refs with Styled Components. When I try to access them in my class methods like below, I get the following error:     Edit.js:42 Uncaught TypeError: this.....contains is not a function     constructor(props) {     .......
I am new to React.js and just now i was learning the concept of ref in React. They have new createRef API in V16.3. I was trying to learn this from REACT DOC's like this -  import React from "react";  export class MyComponent extends Reac...
I have a component for dialog windows in Vue 2 that is listening to event tcs-show-confirm (it is the same event that shows the dialog, sets the show property to true - in a parent component):    @Prop({ default: false })   show: boolean;    @Prop()...
I have a requirement to show thumbnails of videos(cards) in several rows and focus on the very first thumbnail. I did the display using Nested Map. The code basically iterates over a videos array and returns videos in several rows.  How do we focus o...
As suggested in this issue, this is how refs are suggested to use in case I want to ref a child component.  findDOMNode(childComponentStringRef)  class Field extends Component {   componentDidMount() {     // this.inputNode.focus(); // Basically I wa...
I'm trying to generate a test environment to work on D3 using React.  I'm using the following code:  componentDidMount(){     d3.select(this._testChart)         .data(this.state.data)         .enter().append('div')         .style('...
I'm using ReactJS with NextJS. When I'm trying to set a ref, my console returns me undefined, how it is possible? How remedy to this difficulty? I have tried to read some propositions on the web but without success.   Here my snippet:    comp...

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