Exploring Event Handling in React and Vue: A Comparative Analysis

When discussing frontend frameworks, React and Vue undoubtedly stand out as two of the most popular choices today. They both provide effective ways to build user interfaces, but significant differences exist in certain details. One such difference is in event handling, where React tends to favor event delegation, while Vue leans towards direct event binding. This distinction has profound reasons and considerations behind it.

I. Event Delegation: React’s Choice

1. Component-Based Architecture: React’s component-based architecture makes event delegation an effective choice. In React, components can be easily reused and composed, meaning many components may share the same parent element. With event delegation, handling events for these child elements can be unified on the parent element without the need to add individual event listeners for each child element.
2. Here’s an example of a React component using event delegation:

import React from 'react';
 ​
    class TodoList extends React.Component {
      handleClick = (event) => {
        const todo = event.target.innerText;
        // Handle click event logic
      }
 ​
      render() {
        return (
          <div>
            <ul>
              {this.props.todos.map((todo) => (
                <li key={todo.id} onClick={this.handleClick}>
                  {todo.text}
                </li>
              ))}
            </ul>
          </div>
        );
      }
    }