How to Disable a Button in React JS ?

Disabling a button in React JS means making it unclickable and visually indicating its unavailability. This is done by setting the button’s disabled attribute to true. It’s used for controlled interactions, like form submissions with valid data.

A disabled button becomes unclickable and visually signifie­s to the user that its functionality is currently unavailable­. This common practice helps prevent users from performing invalid or prohibited actions within a specific context.

Syntax:

<button disabled={true}>Disabled Button</button>

Prerequisites:

• Introduction to React
• React Hooks
• NPM or NPX

These are the approaches to disable a button in React JS

Steps to Create React Application:

Step 1: Create a react application by using this command

npx create-react-app disable-button-app

Step 2: After creating your project folder, i.e. disable-button-app, use the following command to navigate to it:

cd  disable-button-app

Project Structure:

Approach 1: State Management with Alert Message

The approach involve­s using React’s state hooks to manage button disable­d states. Two functions are create­d for toggling the disabled state, accompanie­d by alerts to provide user massage. The buttons’ appearance­ is determined by conditional internal styling. The internal CSS define­s a centered layout with a promine­nt green heading and distinct style­s for disabled (gray, no cursor) and enabled (re­d, pointer cursor) button states.

Example: This creates a component that displays two buttons, “Disable” and “Enable.” Clicking “Disable” disables the “Disable” button and vice versa. Alert messages confirm the actions.

Javascript

import React, { useState } from 'react';

function App() {
    const [isButtonDisabled, setButtonDisabled] = useState(false);

    const disableButton = () => {
        setButtonDisabled(true);
        alert("Button has been disabled!");
    };

    const enableButton = () => {
        setButtonDisabled(false);
        alert("Button has been enabled!");
    };

    return (
        <div style={styles.container}>
            <h1 style={styles.heading}>Geekforgeeks</h1>
            <button
                onClick={disableButton}
                style={isButtonDisabled ?
                    styles.disabledButton : styles.enabledButton}
                disabled={isButtonDisabled}
            >
                Disable
            </button>
            <button
                onClick={enableButton}
                style={!isButtonDisabled ?
                    styles.disabledButton : styles.enabledButton}
                disabled={!isButtonDisabled}
            >
                Enable
            </button>
        </div>
    );
}

export default App;

const styles = {
    container: {
        textAlign: 'center',
        margin: 'auto',
        padding: '20px',
        width: 400,
    },
    heading: {
        fontSize: '34px',
        marginBottom: '10px',
        color: "green",
        borderBottom: "3px solid green",
        paddingBottom: 20,
        borderRadius: "8px",
    },
    disabledButton: {
        backgroundColor: 'gray',
        color: 'white',
        cursor: 'not-allowed',
        margin: 10,
        padding: 15,
        borderRadius: "8px",
        border: "none",
        boxShadow: "0px 0px 10px 0px grey",
    },
    enabledButton: {
        backgroundColor: 'red',
        color: 'white',
        cursor: 'pointer',
        margin: 10,
        padding: 15,
        borderRadius: "8px",
        border: "none",
        boxShadow: "0px 0px 10px 0px grey",
    },
};

Steps to Run the Application: open the application, use the Terminal and enter the command below.

npm start

Output: This output will be visible on the http://localhost:3000/ on the browser window.

How To Disable A Button In ReactJs Example 1

Approach 2: Conditional Rendering

Conditional rendering in React involves rendering components based on conditions, enabling or disabling UI elements dynamically. Useful for managing component visibility and interactions.

Example: This example creates a form interface with an input field and a submit button. The button is initially disabled when the input field is empty. Once the user enters text, the button becomes enabled, allowing them to submit. Clicking the button triggers an alert showing the input value.

Javascript

import React, { useState } from 'react';

function App() {
    const [inputValue, setInputValue] = useState('');

    const handleSubmit = () => {
        if (inputValue.length > 0) {
            alert("Form submitted with value: " + inputValue);
        }
    };

    return (
        <div style={styles.container}>
            <h1 style={styles.heading}>Geekforgeeks</h1>
            <input
                type="text"
                value={inputValue}
                onChange={(e) => setInputValue(e.target.value)}
                style={styles.input}
            />
            <button
                onClick={handleSubmit}
                style={inputValue.length === 0
                    ? styles.disabledButton : styles.enabledButton}
                disabled={inputValue.length === 0}
            >
                Submit
            </button>
        </div>
    );
}

export default App;

const styles = {
    container: {
        textAlign: 'center',
        margin: 'auto',
        padding: '20px',
    },
    heading: {
        fontSize: '34px',
        marginBottom: '10px',
        color: "green",
        borderBottom: "3px solid green",
        paddingBottom: 20,
        borderRadius: "8px",
    },
    input: {
        padding: '10px',
        marginBottom: '10px',
        width: '200px',
        borderRadius: 8,
    },
    disabledButton: {
        backgroundColor: 'gray',
        color: 'white',
        cursor: 'not-allowed',
        margin: 10,
        padding: 15,
        borderRadius: "8px",
        border: "none",
        boxShadow: "0px 0px 10px 0px grey",
    },
    enabledButton: {
        backgroundColor: 'green',
        color: 'white',
        cursor: 'pointer',
        margin: 10,
        padding: 15,
        borderRadius: "8px",
        border: "none",
        boxShadow: "0px 0px 10px 0px grey",
    },
};

Steps to Run the Application: open the application, use the Terminal and enter the command below.

npm start

Output: This output will be visible on the http://localhost:3000/ on the browser window.

How To Disable A Button In ReactJs Example 2