Global keyboards events on React

by vsasikalabe Updated: Jan 24, 2023

In this kit, we're going to see how to do Global keyboards events on React with simple steps.An event which indicates that a keystroke occurred in a component. This low-level event is generated by a component object (such as a text field) when a key is pressed, released, or typed.A user interacts with the application by pressing either keys on the keyboard or by using mouse. A programmer should know which key the user has pressed on the keyboard or whether the mouse is moved, pressed, or released. These are also called 'events'.The keypress event is fired when a key that produces a character value is pressed down. Examples of keys that produce a character value are alphabetic, numeric, and punctuation keys. Examples of keys that don't produce a character value are modifier keys such as Alt , Shift , Ctrl , or Meta.

Please check the code below,

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

Code:

In this solution we use the React library.

Global keyboards events on React

Lines of Code : 24License : CC BY-SA 4.0

class App extends React.Component {
  state = { lastPressedKey: null };

  componentDidMount() {
    window.addEventListener("keydown", this.handleKeyPress);
  }

  componentWillUnmount() {
    window.removeEventListener("keydown", this.handleKeyPress);
  }

  handleKeyPress = event => {
    this.setState({ lastPressedKey: event.key });
  };

  render() {
    return <div>Key last pressed: {this.state.lastPressedKey}</div>;
  }
}

ReactDOM.render(<App />, 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>

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 (line no 1 to 21)it in App.js file(remove the earlier code from App.js).Copy html code (line no 22 and 23) and paste it in the index.html file within the body tag.
Import React and React DOM.Add export default App to the last line of the code in App.js.
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 'Global keyboards events 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 VS Code 1.73.1 version.
The solution is tested on Nodejs 16.14.2 version.
react 18.2.0 version

Using this solution, we are able to do global keyboards events 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 do global keyboards events on React.