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Reactjs gets values of the only last selected records

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by vsasikalabe dot icon Updated: Feb 16, 2023

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You can use the onChange event handler property to get the selected values from the records. Like the input or textarea component, you can use the onChange event handler for getting the value from the current event element. Now, make this select input object controlled by using the State to pass the value. The value of the selected item can be found with the help of the value property on the selected item, which defines the list. This property will return a string that represents the element's value in the list. If you select the no option, then nothing will be displayed. 


In React, constructors are generally used for two purposes:  

  • It is used to set the element's local state value by assigning an object to this State.  
  • It is used for adding event handler processes that occur in your component. 

This method has the following features: 

  • Using this method, we can sort out our items. 
  • The selected items have the same significance. 
  • This application filters the selected output in schools, hospitals, and other commercial shops.  
  • We can also use this set of elements for other applications. 


Here is an example of how to get values of only selected records in Reactjs: 

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

Code:

In this solution we use the React library.

Reactjs gets values of the only last selected records

JavaScriptdotLines of Code : 47dotLicense : Strong Copyleft (CC BY-SA 4.0)

[
    { id: 1, name: "Tony", Age: "18" , gender: "male", checked: true },
    { id: 2, name: "John", Age: "21" , gender: "female", checked: false},
    { id: 3, name: "Luke", Age: "78" , gender: "male", checked: false},
  ],

 class App extends Component {
  constructor() {
    super();
   this.state = {
       rec: [
        { id: 1, name: "Tony", Age: "18" , gender: "male" },
        { id: 2, name: "John", Age: "21" , gender: "female"},
        { id: 3, name: "Luke", Age: "78" , gender: "male"},
      ],
      chrk: '',

    };
  }

  useridChanged(name, e) {
     let rec = this.state.rec.map(a => ({...a}));
     rec.map(i => i.checked = i.name === name ? e.target.checked : i.checked ? i.checked : false);
     this.setState({ rec }, () => console.log(this.state.rec));
  }

  render() {
    return (
      <div>
        <ul>
            {this.state.rec.map((obj, i) => (
              <li key={i}>

                 <input type="checkbox" name="chrk" value={obj.id}

                onChange={this.useridChanged.bind(this, obj.name)}
              />{obj.name} - {obj.Age}  - {obj.gender} 


              </li>
            ))}
          </ul>
      </div>
    );
  }
}

Instructions

Follow the steps carefully to get the output easily.

  1. Install the Node.js and React on your IDE(preferable Visual Studio Code).
  2. Create React Application using npx create-react-app foldername.
  3. cd foldername.
  4. Open the folder in IDE.
  5. Copy the code using "copy" button above and paste it in App.js (from line no 6 to 45)file(remove the earlier code from App.js).
  6. Next add render(<App />, document.getElementById('root')) and export default App to the last 2 lines of the code.
  7. Import React component from React and render from React DOM.
  8. Open the terminal from IDE.
  9. npm start to run the file.


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

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 ' Reactjs gets values of the only last selected records '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.

  1. The solution is created in VS Code 1.73.1 version.
  2. The solution is tested on Nodejs 16.14.2 version.
  3. react 18.2.0 version.


Using this solution, we are able to get values of the only last selected records using Reactjs 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 get values of the only last selected records.

Dependent Libraries

create-react-appby facebook

JavaScript doticonstar image 100082 doticonVersion:v5.0.1doticon
License: Permissive (MIT)

Set up a modern web app by running one command.

Support
    Quality
      Security
        License
          Reuse

            create-react-appby facebook

            JavaScript doticon star image 100082 doticonVersion:v5.0.1doticon License: Permissive (MIT)

            Set up a modern web app by running one command.
            Support
              Quality
                Security
                  License
                    Reuse

                      You can search for any dependent library on kandi like 'react'.

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