Simple Update of Input in React to State

by Abdul Rawoof A R Updated: Jan 24, 2023

In this kit, we're going to implement simple update to input in react to state with simple steps. To update state , React developers use a special method called setState that is inherited from the base Component class. The setState method can take either an object or a function as the first argument. State updates in React are asynchronous; when an update is requested, there is no guarantee that the updates will be made immediately. The updater functions enqueue changes to the component state, but React may delay the changes, updating several components in a single pass. 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.

Simple update of input in React to State

JavaScriptLines of Code : 25License : CC BY-SA 4.0

class Home extends React.Component {
  inputRef = React.createRef();
  state = {
    city: "London"
  }

  updateCity=()=> {
    this.setState({ city: this.inputRef.current.value })
  }

  render() {
    return (
      <div>
        <p>{this.state.city}</p>
        <input type="text" ref={this.inputRef}/>
        <button onClick={this.updateCity}>Update City</button>
      </div>
    )
  }
}

ReactDOM.render(<Home/>, document.getElementById("root"));
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script>
<div id="root"></div>

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) then paste the script tag in index.html file.
Import React and ReactDOM in index.js file.
Open the terminal from IDE.
npm start to run the file.

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 implement simple update to input in react to state' 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 implement simple update to input in react to state using 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 implement simple update to input in react to state using react.