React Select Dropdown onchange | React Select Box Example

In this example, we will take a simple “category” select box and add onchange event with handleChange() then we will assign a value on state variable array. Then on submitting an event, we will take those values with the state variables.

So, let’s see bellow preview and code:

Example Code:

import React, { Component } from 'react';
import { render } from 'react-dom';
    
class App extends Component {
  constructor() {
    super();
    this.state = {
      category: 'php'
    };
     
    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }
    
  handleChange(event) {
    this.setState({category: event.target.value});
  }
    
  handleSubmit(event) {
    console.log(this.state);
    event.preventDefault();
  }
    
  render() {
    return (
      <div>
        <h1>React Select Dropdown onChange Example</h1>
        <form onSubmit={this.handleSubmit}>
          
          <strong>Select Category:</strong>
          <select value={this.state.category} onChange={this.handleChange}>
            <option value="php">PHP</option>
            <option value="laravel">Laravel</option>
            <option value="angular">Angular</option>
            <option value="react">React</option>
            <option value="vue">Vue</option>
          </select>
  
          <input type="submit" value="Submit" />
        </form>
      </div>
    );
  }
}
  
render(<App />, document.getElementById('root'));

Output:

{category: "react"}
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