CODEWITHSUNDEEP
javascriptreactjs
Abhinav Mehrotra
Abhinav Mehrotra

Reputation: 613

ReactJs : How to reload a component onClick

I am new to React and am still learning it. I have a component Requirements which I would like to reload everytime getDocFinancialInfo () is called by clicking on the event. The issue is that it loads the correct information the first time but does not refreshes it on subsequent clicks. Any help or suggestion would be most welcome.

    import React, { Component } from 'react';
    import './UploadDocument.css'
    import spinner from './spinner.gif'
    import verified from './verified.png';
    import notverified from './not-verified.png';
    import Requirements from './Requirement.js'


    class UploadDocument extends Component{

      constructor(props) {
        super(props);
        this.state = {
          application: [],
          document:[],
          id: null,
          files: [],
          docFinacialInfo: [],
          uploaded: null,
          fileInfo: []
        }
      }


      componentDidMount() {
        ......
      }




      getDocFinancialInfo = async(docId) => {
          sessionStorage.setItem('docId',docId);

          var req = document.getElementById('requirements');
          req.style.display = "block";
      }




      render(){
        ......

          if(notVerifiedStatus > 0){
              docVerificationStatus[index] = <td className="red"><img src={notverified} alt="Not Verified"/><label onClick={()=>this.getDocFinancialInfo(docId)}>Not Verified{docId}</label></td>;
          }else{
              docVerificationStatus[index] = <td className="green"><img src={verified} alt="Verified" /><label>Verified</label></td>;
          }
          console.log("Not Verified >>>"+notVerifiedStatus);
        });

        ......

        return(
          <div>

                .........

                    <div id="requirements">
                      <div id="requirements-content">
                        <span className="close" onClick={()=>this.closeRequirements()}>&times;</span>
                        <Requirements />
                      </div>
                    </div>

                .........
          </div>
        )
      }
    }

    export default UploadDocument

Upvotes: 6

Views: 34085

Answers (3)

Madhubala Jayakumaran
Madhubala Jayakumaran

Reputation: 39

You can use vanilla Javascript to call reload method window.location.reload(false) 

<button onClick={() => window.location.reload(false)}>Click to reload!</button>

Upvotes: -2

Yury
Yury

Reputation: 21

As mentioned above - change key value is a great idea But instead of using Math.random I prefer using new Date() value to be sure that key is changed anyway :)

Upvotes: 2

Tholle
Tholle

Reputation: 112787

You can change the key prop given to a component in order to unmount it and mount a new one.

You could keep a random value in your state that you randomise again when getDocFinancialInfo is called and use this value as the key for Requirements.

Example

class Requirements extends React.Component {
  state = { count: 0 };

  componentDidMount() {
    this.interval = setInterval(() => {
      this.setState(({ count }) => ({ count: count + 1 }));
    }, 1000);
  }

  componentWillUnmount() {
    clearInterval(this.interval);
  }

  render() {
    return <div> {this.state.count}</div>;
  }
}

class UploadDocument extends React.Component {
  state = {
    requirementKey: Math.random()
  };

  getDocFinancialInfo = docId => {
    this.setState({ requirementKey: Math.random() });
  };

  render() {
    return (
      <div>
        <Requirements key={this.state.requirementKey} />
        <button onClick={this.getDocFinancialInfo}> Reload </button>
      </div>
    );
  }
}

ReactDOM.render(<UploadDocument />, 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>

Upvotes: 10

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