How can I change what is rendred with a click event in React

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I'm new to React, and I'm trying to figure out how to adjust what appears in render based on a click event. My component receives two props "front" and "back". I want the component to display this.props.front upon rendering and change to this.props.back when the div is clicked. I'm having trouble figuring out how to accomplish this in my handleClick function.

Any help would be appreciated!

import React, { Component } from 'react';

class Card extends Component {

handleClick = event => {

}

render() {
return (      
    <div className="Card" onClick={this.handleClick}>
      <h1>{this.props.front}</h1>
    </div>
    );
  }
}

export default Card;

You could add a state to this component which is a boolean that toggles itself

class Card extends Component {
  constructor(props) {
    this.state = {
    showFront: true
  }
}...

And than use your handleClick method to switch the state back and forth

handleClick = (e) => {
  this.setState({showFront: !this.state.showFront})
}

And in your render function you could put a conditional to show

render() {
  return (
    <div className="Card" onClick={this.handleClick}>
      {
        this.state.showFront
          ? <h1>{this.props.front}</h1>
          : <h1>{this.props.back}</h1>
      }
    </div>
  );
}

A comment to this answer was made but was deleted - i think it's a subject worth touching.

the comment said you should use the setState(updater()) and not pass an object. it's true that when the app becomes more complex, you have several state updates together and data states may not be what you believe they are at that moment, updater function is apropriate (setState is async and could batch calls this is why we have the function that flushes all and helps us maintain state integrity comparing old states with new ones.

but for this answer and the complexity of the question an updater isn't necessary and the code should work just fine (and it gets to the point of using state and toggling which is the right way of doing what was asked).

you can use the updater function any time you please - even for the most simplest state change. And like said here, maybe it is best practice to just always use it :)

for more reference React.Compoment setState & Updater function

How can I change what is rendred with a click event in React, showFront}) }. And in your render function you could put a conditional to show In react you trigger render by changing the state of component. Teams. Q&A for Work. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

In react you trigger render by changing the state of component. If this component needs to recieve props "front" and "back" then parent component should have saved in state if the state is "front" or "back" and pass down to component callback function to handle change. Something like:

import React, { Component } from 'react';


class ParentCard extends Component {
  state = { isFront: true };

  handleClick = event => {
     this.setState({isFront: !this.state.isFront})
  }

 render = () => {

    const { front } = this.state;    


    return (
        <Card front={front} onClick={this.handleClick} />
    );
 };

export default ParentCard;

Also you can make Card component "pure" just by creating it as function which returns JSX.

import React from 'react';


const Card = ( { isFront, onClick } ) => {

     return (

        <div className="Card" onClick={onClick}>

          <h1>{isFront ? `text if is front` : `text if it is not`}</h1>
        </div>

    );
  }
}

export default Card;

Hope it helps :)

React: How to show a different component on click, Toggle the visibility of components by telling React to display another component First, attach a click event to a component: In triggerAddTripState you edit the state of the component: render() { return ( <div> {this.state. Editor Window Customization in React Schedule component. Scheduler makes use of popups and dialog to display the required notifications, as well as includes an editor window with event fields for making the appointment creation and editing process easier.

I'd say in that case you want to use state rather than props here, particularly when the state you want to change is being dictated by the component itself.

class Card extends Component {
  state = {
    mode: 'front' // default state to front
  }

  handleClick = () => this.setState({ mode: 'back' })

  render() {
    return (
      <div className="Card" onClick={this.handleClick}>
        <h1>{this.props.mode}</h1>
      </div>
    );
  }
}

export default Card;

If this is really a toggle then of course you can use a Boolean flag instead, but you get the idea.

React onClick Event Handling (With Examples), In React, the onClick handler allows you to call a function and perform is defined inside of the onClick handler when the React Component renders. a list of users and provides admins with the ability to edit or delete users:. However, as we can see, we can’t simply change the name property. We’ll get a new object with that particular change and this object has a new reference. Or in short: If there’s a change, we get a new reference. Reducing the number of checks. Angular can skip entire change detection subtrees when input properties don’t change.

This component itself is currently not set up as a stateless functional component so if thats what you also wanted to achieve. Youll want to make these changes as well as pass props of a boolean in your stateful component.

import React from 'react';

const Card = (props) => {

return (

  <div className="Card" onClick={props.handleClick}>

     {props.showFront 
     ?
     <h1>props.front</h1>
     :
     <h1>props.back</h1>
     }

   </div>

    );
  }

export default Card;

you'll want to utilize the previous state to toggle your state because it could cause issues later down the road with batching, so your stateful component should look something like:

import React, {Component} from "React";

class StatefulCard extends Component {
  state = {
    showFront: true // default state to front
  }

  handleClick = () => {
   this.setState(prevState => {
    return {
     showFront: !prevState.showFront
    }
  }
}


  render() {
    return (
      <div>
        <Card 
         handleClick={this.handleClick}
         showFront={this.state.showFront}
/>
      </div>
    );
  }
}

export default Card;

React Events, React has the same events as HTML: click, change, mouseover etc. to the component object */ } render() { return ( <button onClick={this.shoot}>Take the shot! Events separated by a space will still be treated as registering multiple events so long as the event name does not start with a DOM event name (click, change, mousedown etc). DOM events observed in this way will only operate on the view itself.

A guide to React onClick event handlers, Learn the ins and outs of React's onClick event handler, including event listening, binding methods, This could be a mouse click or a change in a text input. This method requires calling .bind(this) in the render() function. I am also trying to change columns dynamically. Solution given works for me (destroy then re create) but "ng-click" stops working when re create the grid. "ng-click" attr is applied to html (checked by inspecting element) but it does not triggers the function. i think event is not binded when grid re-created dynamically. please help.

React onClick event; updating the color (SOLVED) - JavaScript, User should change the color everytime the buttons are clicked. The number I would try binding this inside the render function instead. Component – React. Your perfect companion for Angular, React, Vue and JSF featuring elegant, high-performance, accessible and fully customizable UI Components. Trusted By Open source products of PrimeTek are used all around the world by 5M+ developers in Fortune 500 companies, corporations, government agencies and educational institutions.

4 methods to force a re-render in React, Here are a few methods to force a re-render a React component. You can also re-render a component on an event, such as a click event. class App extends React.Component { state Re-render component when props change. class Child� Reactivity is what makes your Shiny apps responsive. It lets the app instantly update itself whenever the user makes a change. You don’t need to know how reactivity occurs to use it (just follow the steps laid out in Lesson 4), but understanding reactivity will make you a better Shiny programmer.

Comments
  • So you want it set to toggle between this.props.front and this.props.back? Or do you want it to just change with no toggle back and forth
  • Yes - I'd like to be able to toggle between this.props.front and this.props.back
  • Great! I replied in the answers section. Hope it helps :)
  • Thanks - I'd like to keep this as a stateless component if at all possible though.
  • Thanks, this seems like a great solution. But I think there's a binding problem. showFront is undefined in the handleClick function.
  • Sorry fixed it now :) instaed of !showFront it should be !this.state.showFront
  • You're welcome :), please accept as correct answer if it helped.
  • On the stateless component example, that's only half the battle as you move the responsibility of the state onto a HoC.