In this article, we are going to learn about disabling 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.
When a button is disabled, it 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
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 Struture
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: In this example, we 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}>Geekforneveropen</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", }, }; |
Step 3: To open the application, use the Terminal and enter the command listed below.
npm start
Output:
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: In this example, we 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}>Geekforneveropen</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", }, }; |
To open the application, use the Terminal and enter the command listed below.
npm start
Output:
How To Disable A Button In ReactJs Example 2
