Implementing a Dynamic Background Color Switcher in React

I'm currently working on creating a function that will alter the background color of a website's homepage when a user clicks a specific button.

class App extends Component {
  constructor(props) {
    super(props);
    this.state = { 
      quotes: [], 
      selectedQuoteIndex: null,
      background: 'white'
    }   
    this.changeBackground = this.changeBackground.bind(this);
  }

  changeBackground() {
    return random(backgroundColor);
  }        

  render() {
    return (
      <button onClick={this.changeBackground}/>
    )   
  }
}

I'm unsure about where to place the code for returning the background color in my component.

Answer №1

Initially, it is important to note that the changeBackground function should not have a return value. Instead, its purpose should be to update the state with a newly generated random color code in hex format, which will represent the background color.

  changeBackground() {
    let background = "#" + ((1<<24)*Math.random() | 0).toString(16);
    this.setState({background});
  }

Next, you must apply the background style using the value stored in state.background. In this scenario, the div element will act as the background covering the entire viewport.

  render() {
    return (
      <div style={{
        width: '100vw',
        height: '100vh',
        backgroundColor: this.state.background
      }}> 
        <button onClick={this.changeBackground}/>
      </div>
    )   
  }

}

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