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How to use ClickAwayListener Component in ReactJS ?
  • Last Updated : 05 Mar, 2021

Detect if a click event happened outside an element. Whenever the user clicks somewhere in the document, this listener works. Material UI for React has this component available for us, and it is very easy to integrate. We can use the ClickAwayListener Component in ReactJS using the following approach.

Creating React Application And Installing Module:

Step 1: Create a React application using the following command.

npx create-react-app foldername

Step 2: After creating your project folder i.e. foldername, move to it using the following command.

cd foldername

Step 3: After creating the ReactJS application, Install the material-ui modules using the following command.



npm install @material-ui/core

Project Structure: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js




import React from "react";
import { lightBlue } from "@material-ui/core/colors";
import ClickAwayListener from 
    "@material-ui/core/ClickAwayListener";
  
export default function App() {
  const [open, setOpen] = React.useState(false);
  
  const handleClickAwayEvent = () => {
    setOpen(false);
  };
  
  const handleClickEvent = () => {
    setOpen((prev) => !prev);
  };
  
  return (
    <div style={{ display: "block", padding: 30 }}>
      <h4>How to use ClickAwayListner Component in ReactJS?</h4>
      <ClickAwayListener onClickAway={handleClickAwayEvent}>
        <div
          style={{
            position: "relative",
          }}
        >
          <button type="button" onClick={handleClickEvent}>
            ClickAwayListener Demo
          </button>
          {open ? (
            <div
              style={{
                width: 150,
                position: "absolute",
                right: 0,
                fontSize: 9,
                border: "1px solid",
                left: 0,
                backgroundColor: lightBlue,
                zIndex: 1,
                padding: 3,
                top: 28,
              }}
            >
              It will be visible until you click outside this box
            </div>
          ) : null}
        </div>
      </ClickAwayListener>
    </div>
  );
}

Step to Run Application: Run the application using the following command from the root directory of the project.

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output.

Reference: https://material-ui.com/components/click-away-listener/




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