Auto select option from Dropdown in ReactJS

Auto Select option from Dropdown means without forcing the user to click on any options, the option value is auto-populated. Material UI for React has this component available for us and it is very easy to integrate. We can auto-select the options from Dropdown 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
npm install @material-ui/lab

Project Structure: It will look like the following.

Project Structure

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

Javascript

import React from 'react'
import TextField from '@material-ui/core/TextField';
import Autocomplete from '@material-ui/lab/Autocomplete';

const App = () => {

  // Sample options for dropdown
  const myOptions = ['One', 'Two', 'Three', 'Four', 'Five'];

  return (
    <div style={{ marginLeft: '40%', marginTop: '60px' }}>
      <h3>Greetings from GeeksforGeeks!</h3>
      <Autocomplete
        style={{width:500}}
        autoSelect
        options={myOptions}
        renderInput={(params) => (
          <TextField {...params}
            variant="outlined"
            label="AutoSelect Dropdown"
           />
        )}
      />
    </div>
  );
}

export default App

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:

Now over any option and click outside the dropdown, the option value will be auto-populated. This is how auto select works in ReactJS for dropdown.