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How to validate URL in ReactJS?
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How to Validate a Date in ReactJS?

Last Updated : 01 Oct, 2024
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Validating input Date in react ensures the correct date input. The valid date input is commonly used in case of calculating days, getting DOB for user data, and other operations etc.

Prerequisites:

  • React JS
  • Node JS and NPM

Approach

To validate a date in React we will use the validator npm package. Take the date input from users and validate the input using validator.isDate() function. This function returns boolean value. Display the message “Valid Date” if it gives true else return the message “Enter Valid date”.

import validator from "validator";

const validateDate = (value) => {
	if (validator.isDate(value)) {
		return "Valid Date :)";
	} else {
		return "Enter Valid Date!";
	}
};

Step to Create React App and Install Module

Step 1: Create a React application using the following command:

npx create-react-app datevalidatedemo

Step 2: After creating your project folder i.e. datevalidatedemo, move to it using the following command:

cd datevalidatedemo

Step 3: After creating the ReactJS application, Install the validator module using the following command:

npm install validator

Project Structure:

Project Structure

The updated dependencies in the package.json file are:

"dependencies": {
    "@testing-library/jest-dom": "^5.17.0",
    "@testing-library/react": "^13.4.0",
    "@testing-library/user-event": "^13.5.0",
    "react": "^18.3.1",
    "react-dom": "^18.3.1",
    "react-scripts": "5.0.1",
    "validator": "^13.12.0",
    "web-vitals": "^2.1.4"
},

Example: This example uses the validator npm package to validate date in React app.

JavaScript 
import React, { useState } from "react"; import validator from "validator";  const App = () => { 	const [errorMessage, setErrorMessage] = useState("");  	const validateDate = (value) => { 		// Check if the input has at least 10 characters (e.g., "YYYY-MM-DD") 		if (value.length === 10) { 			// Validate date using validator's isDate function 			if ( 				validator.isDate(value, { 					format: "YYYY-MM-DD", 					strictMode: true 				}) 			) { 				setErrorMessage("Valid Date :)"); 			} else { 				setErrorMessage("Enter Valid Date! Use format YYYY-MM-DD."); 			} 		} else { 			setErrorMessage("Enter Valid Date! Use format YYYY-MM-DD."); 		} 	};  	return ( 		<div style={{ marginLeft: "200px" }}> 			<h2>Validating Date in ReactJS</h2> 			<div> 				<span>Enter Date (YYYY-MM-DD): </span> 				<input 					type="text" 					onChange={(e) => validateDate(e.target.value)} 					placeholder="YYYY-MM-DD" 				/> 			</div> 			<br /> 			<span style={{ fontWeight: "bold", color: "red" }}> 				{errorMessage} 			</span> 		</div> 	); };  export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output:

Output-date-validation-in-react


Next Article
How to validate URL in ReactJS?
author
gouravhammad
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Article Tags :
  • JavaScript
  • ReactJS
  • Technical Scripter
  • Web Technologies

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