Manage State for Multiple Inputs on React

by Abdul Rawoof A R Updated: Jan 24, 2023

In this kit, we're going to see how to manage state for multiple inputs on React with simple steps. When you need to handle multiple controlled input elements, you can add a name attribute to each element and let the handler function choose what to do based on the value of event.target.name. If two state variables change together, it is a good practice to combine them into a single state variable. To create multiple input boxes in react, create an array in the state variable then assign a name to the dynamic input field with the help of array indexing like name0, name1. To implement this task, use the ready-made code snippet below by just copying the code and paste it in your IDE with React library. Explore more top trending libraries and code snippets on kandi.

Fig : Preview of the output that you will get on running this code from your IDE.

Code

In this solution we're using React library.

React : How to manage state for multiple input types

JavaScriptLines of Code : 83License : CC BY-SA 4.0

class PlayersPage extends React.Component {
    constructor(props) {
        super(props);
        this.changeRecord = this.changeRecord.bind(this);
        this.state = {
            playerData: [
                {
                    "dataKey": "300",
                    "playerFirstName": "Roger",
                    "playerLastName": "Federer",
                    "playerRanking": "1"
                },
                {
                    "dataKey": "301",
                    "playerFirstName": "Rafael",
                    "playerLastName": "Nadal",
                    "playerRanking": "2"                    
                }           
            ]
        };
    }

    changeRecord(record, event) {
      console.log(event.currentTarget.value);
      console.log(record);
      this.setState({
        // Write your logic to update the playerDate value accordingly
      });
    }

    render() {
        return (
            <div className="container">
                <PlayerTable recordChangeHandler={this.changeRecord} tableData={this.state.playerData} />;
            </div>
        );
    }
}



class PlayerTable extends React.Component {
    render() {
        const rows = [];
        this.props.tableData.forEach((rowData) => {
            rows.push(<PlayerRow recordChangeHandler={this.props.recordChangeHandler} key={rowData.dataKey} rowData={rowData} />);
        });
        return (
            <div className="table-responsive">
                <table className="table table-condensed">
                    <thead>
                        <tr>
                            <th>First Name</th>
                            <th>Last Name</th>
                            <th>Ranking</th>
                        </tr>
                    </thead>
                    <tbody>
                        {rows}
                    </tbody>
                </table>
            </div>
        );
    }
}

class PlayerRow extends React.Component {
    render() {
        return (
            <tr>
                <td><input type="text" onChange={this.props.recordChangeHandler.bind(this, this.props.rowData)} defaultValue={this.props.rowData.playerFirstName} /></td>
                <td><input type="text" onChange={this.props.recordChangeHandler} defaultValue={this.props.rowData.playerLastName} /></td>
                <td><input type="text" onChange={this.props.recordChangeHandler} defaultValue={this.props.rowData.playerRanking} /></td>
            </tr>
        );
    }
}

ReactDOM.render(
  <PlayersPage />,
  document.getElementById('container')
);

Instructions

Follow the steps carefully to get the output easily.

Install the Node.js and React on your IDE(preferable Visual Studio Code).
Create React Application using npx create-react-app foldername.
cd foldername.
Open the folder in IDE.
Copy the code using "copy" button above and paste it in index.js file(remove the earlier code from index.js).
Import React and ReactDOM in index.js file.
Open the terminal from IDE.
npm start to run the file.

You can also refer this url 'DEMO' for getting the above output.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for 'how to manage state for multiple inputs on react' in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

The solution is created in Visual Studio Code 1.73.1.
The solution is tested on node v18.12.1 and npm v8.19.2.
React version-18.2.0.

Using this solution, we are able to manage state for multiple inputs on React with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to manage state for multiple inputs on React.