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Best way to update component after this handleClick?


By : AviatorJeremy
Date : October 17 2020, 08:10 PM
it helps some times Why not to use just setState? It will re-render your component automatically.
code :
.then((res) => this.setState({ deletedId: logId }))
{this.state.deletedId && <span>deleted id: {this.state.deletedId}</span>}


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Update component within handleClick React


By : Nemat Ghalndari
Date : March 29 2020, 07:55 AM
it fixes the issue Instead of returning a new JSX element, you could use the state to save id and text, then update the state on click.
code :
class NavbarList extends React.Component {
 constructor() {
    super();
    this.state = {
      text: "Old Text",
      id: 0
    };
    this.onClick = this.handleClick.bind(this);
  }

  handleClick(event) {
    const {id} = event.target;
    console.log(id);

    this.setState({
       text: "New text",
       id: 1
    });
  }

  render() {
     return (	
         <h3 id={this.state.id} onClick={this.onClick}>{this.state.text}</h3>
  )};
};

ReactDOM.render(
  <NavbarList  />,
  document.getElementById('root')
);
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>
<div id="root"></div>

handleClick function not working on parent component?


By : pravin tandale
Date : March 29 2020, 07:55 AM
help you fix your problem In your QuestionCard component, you never call the click handler you passed as props.
You need to call the this.props.handleClick to trigger the parent's onClick handler.
code :
 handleClick(choice) {
     this.setState(prevState => ({hideDiv: !prevState.hideDiv});
     this.props.handleClick();
 }

Why does the handleClick method in my component seem to loop?


By : Rabbani
Date : March 29 2020, 07:55 AM
it should still fix some issue I am setting out to learn some react, and I am trying to create a grid of clickable buttons. For now all I want is to change the color of the button once it is clicked. , The problem is in the way of your state initialization:
code :
Array(height).fill(Array(width).fill(null))

Why is the setState in my handleClick function updating the component's state one step later?


By : user3688879
Date : March 29 2020, 07:55 AM
Hope this helps Might have something to do with this (from react docs):

In React, how do I pass arguments into a parent component's handleClick function?


By : Alberto Quinteri
Date : March 29 2020, 07:55 AM
should help you out Try to do this without using arrow function definition inside props (bad for child components performance, as will always be a new function reference more info here)
Parent class does not need the arrow function defined when passing onClick to BettingChips, we can do this at the class level instead, using arrow function to lexically bind this...
code :
class SomeParentComponent extends Component {

  handleClick = (betAmount) => {
    alert(betAmount)
  }

  render() {
    return <BettingChips onClick={this.handleClick} />
  }

}
class BettingChips extends Component {

  onClick = (e) => {
    this.props.onClick(e.target.value)
  }

  render() { 
   return(
     <div> 
       <button onClick={this.onClick} value={1}>1</button>
       // ... etc   
     </div>
    ) 
  }

}
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