Use a Ternary Expression for Conditional Rendering-react

JavaScript
1

This code isn’t satisfying the last condition for this challenge, which says,
“Once a number has been submitted, and the value of the input is once again changed, the button should return to reading Submit.”

Please Help me. I can’t figure out what’s wrong.

Your code so far



const inputStyle = {
  width: 235,
  margin: 5
}

class CheckUserAge extends React.Component {
  constructor(props) {
    super(props);
    // change code below this line
    this.state = {
      input: '',
      userAge: ''
    }
    // change code above this line
    this.submit = this.submit.bind(this);
    this.handleChange = this.handleChange.bind(this);
  }
  handleChange(e) {
    this.setState({
      input: e.target.value,
      userAge: ''
    });
  }
  submit() {
    this.setState({
      userAge: this.state.input
    });
  }
  render() {
    const buttonOne = <button onClick={this.submit}>Submit</button>;
    const buttonTwo = <button>You May Enter</button>;
    const buttonThree = <button>You Shall Not Pass</button>;
    return (
      <div>
        <h3>Enter Your Age to Continue</h3>
        <input
          style={inputStyle}
          type="number"
          value={this.state.input}
          onChange={this.handleChange} /><br />
        {
          this.state.input==='' ? buttonOne:(this.state.input>=18?buttonTwo:buttonThree)
        }
      </div>
    );
  }
};

Your browser information:

User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/front-end-libraries/react/use-a-ternary-expression-for-conditional-rendering

2

I think the state variable in the ternary part should be userAge, not input.

1 Like
3

I tried it as well but this isn’t working.

4

Can you show your code so far?

5

Yea Sure !
Here it is

const inputStyle = {
  width: 235,
  margin: 5
}

class CheckUserAge extends React.Component {
  constructor(props) {
    super(props);
    // change code below this line
    this.state = {
      input: '',
      userAge: ''
    }
    // change code above this line
    this.submit = this.submit.bind(this);
    this.handleChange = this.handleChange.bind(this);
  }
  handleChange(e) {
    this.setState({
      input: e.target.value,
      userAge: ''
    });
  }
  submit() {
    this.setState({
      userAge: this.state.input
    });
  }
  render() {
    const buttonOne = <button onClick={this.submit}>Submit</button>;
    const buttonTwo = <button>You May Enter</button>;
    const buttonThree = <button>You Shall Not Pass</button>;
    return (
      <div>
        <h3>Enter Your Age to Continue</h3>
        <input
          style={inputStyle}
          type="number"
          value={this.state.input}
          onChange={this.handleChange} /><br />
        {
          this.state.userAge==='' ? buttonOne:(this.state.userAge>=18?buttonTwo:buttonThree)
        }
      </div>
    );
  }
};
6

Strange. Your code passes on Firefox and Chromium

7

Yeah ! it’s working on chromium but not on chrome.

8

Strange,it works on Chrome now…:face_with_raised_eyebrow: