React.js Toggling Display

Question

I am trying to toggle a content on my page with a button in React.js If I press the button, I want the content to disappear. If I press it again, I want the content to reappear again. I tried everything that I can think of, but nothing seems to work. I initially tried a ternary statement to see if I can toggle, but it just breaks my application. Can someone tell me how I can improve this part of the project? Here is what I have:

//App.js


import React, { Component } from 'react';

class App extends Component {
  constructor(props) {
    super(props);

    this.state = {
      isToggle: false
    };
  }

  handleClick(e) {
    this.setState({ !isToggle ? isToggle: true : isToggle: false });
  }

  render() {

    const style = {
      display: none
    };

    return (
      <div>
        <h1 className="text-xs-center">List of items:</h1>
        <button onClick={this.handleClick.bind(this)} className="btn btn-primary">Toggle</button>
        <div className="container" style={!isToggle ? style.display = none : style.display = block}>
          <li>Item 1</li>
          <li>Item 2</li>
          <li>Item 3</li>
          <li>Item 4</li>
        </div>
      </div>
    );
  }
}

export default App;

Basically, I want to toggle the Item 1, Item 2, Item 3, Item 4.

Answer 1

This would be its shape if I were to make up the component.

import React, { Component } from 'react';

class App extends Component {
  constructor(props) {
    super(props);
    this.state = {isToggle: false};
    this.handleClick = this.handleClick.bind(this);
  }

  handleClick(e) {
    this.setState({isToggle: !this.state.isToggle});
  }

  render() { 
    return (
      <div>
        <h1 className="text-xs-center">List of items:</h1>
        <button
          className="btn btn-primary"
          onClick={this.handleClick}
        >
          Toggle
        </button>
        <div
          style={{display: this.state.isToggle ? 'block': 'none'}}
          className="container"
        >
          <li>Item 1</li>
          <li>Item 2</li>
          <li>Item 3</li>
          <li>Item 4</li>
        </div>
      </div>
    );
  }
}

export default App;

Answer 2

You can use conditional rendering instead of CSS:

import React, { Component } from 'react';

class App extends Component {
  constructor(props) {
    super(props);

    this.state = {
      isVisible: false
    };
    this.onToggle = this.onToggle.bind(this);
  }

  onToggle(e) {
    this.setState({isVisible: !this.state.isVisible});
  }

  render() {    
    return (
      <div>
        <h1 className="text-xs-center">List of items:</h1>
        <button onClick={this.onToggle} className="btn btn-primary">Toggle</button>

        {this.state.isVisible &&
          <div className="container">
            <li>Item 1</li>
            <li>Item 2</li>
            <li>Item 3</li>
            <li>Item 4</li>
          </div>
        }
      </div>
    );
  }
}

export default App;