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Introduction to Mastering ReactJS

Getting Started with ReactJS

Understanding Components in ReactJS

Handling Events in ReactJS

Managing State and Props in ReactJS

Component Lifecycle and Hooks in ReactJS

JSX & Conditional Rendering in ReactJS

Styling React Components

Fragments & Lists in ReactJS

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Download Notes

Handling Events in ReactJS

Key Topics Covered:

1) Adding Event Listeners to Components.

2) Common Event Handlers (onClick, onChange, etc.).

3) Updating State Based on User Input.

Handling Events in ReactJS

Updated App.js File:

App.js


import React from 'react';

class Comp1 extends React.Component {
    state = { inputValue: null };

    handleClick = () => { alert("Button Clicked."); };

    handleChange = (event) => { this.setState({ inputValue: event.target.value }); };

    render() {
        return (<div>
            <input type='text' onChange={this.handleChange} value={this.state.inputValue} />
            <button onClick={this.handleClick}>Button to click</button>
            <p>User Input: {this.state.inputValue}</p>
        </div>);
    }
}

function App() {
    return (<div>
        <Comp1 />
    </div>);
}

export default App;