JavaScript Application For Email Validation Last Updated : 06 Jan, 2025 Comments Improve Suggest changes Like Article Like Report The Email Validation Project in JavaScript aims to create an efficient system for verifying the authenticity and format of email addresses. This tool ensures data accuracy, reduces errors, and enhances the user experience by preventing invalid email submissions.Project PreviewEmail validation Application in JavaScriptWhat Will You Learn?We’ll build an application that allows users toEnter an email address in an input field.Validate the entered email against a regular expression.Display an error message if the email format is invalid.Provide visual feedback when the email is valid or invalid.The application will include a clean user interface and provide instant feedback to the user.Email validation App - HTML and CSS This HTML code creates a simple email validation form. It allows users to enter their email address. This CSS code provides styling for the email validation form, ensuring a clean and modern look. HTML <html> <head> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: Arial, sans-serif; background-color: #f4f4f4; display: flex; justify-content: center; align-items: center; height: 100vh; } .container { background-color: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); width: 100%; max-width: 400px; } h2 { text-align: center; margin-bottom: 20px; } form { display: flex; flex-direction: column; } label { margin-bottom: 8px; font-size: 16px; } input[type="text"] { padding: 10px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 4px; font-size: 16px; } button { padding: 10px; background-color: #4CAF50; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; } button:hover { background-color: #45a049; } .error-message { color: red; font-size: 14px; display: none; margin-bottom: 15px; } </style> </head> <body> <div class="container"> <h2>Email Validation Form</h2> <form id="emailForm"> <label for="email">Enter your email:</label> <input type="text" id="email" name="email" placeholder="[email protected]" required> <span id="error-message" class="error-message"></span> <button type="submit">Submit</button> </form> </div> </body> </html> In this codeThe container centers the form and applies styling for a clean and modern design.The input field allows users to enter their email address, with a placeholder for guidance.The error-message span displays validation errors dynamically.The submit button triggers the validation logic.CSS provides styles for responsiveness, error highlighting, and hover effects.Email validation App - JavaScript Logic This JavaScript code handles email validation for the form submission. It checks if the entered email matches a specified pattern and displays an error message if the format is incorrect. JavaScript document.getElementById("emailForm").addEventListener("submit", function (event) { event.preventDefault(); const email = document.getElementById("email").value; const errMsg = document.getElementById("error-message"); const pattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; if (pattern.test(email)) { errMsg.style.display = "none"; alert("Email is valid! Form Submitted."); document.getElementById("emailForm").reset(); } else { errMsg.style.display = "block"; errMsg.textContent = "Please enter a valid email address."; } }); In this codeThe form is selected using its ID, and an event listener is added to handle submissions.The emailPattern regular expression checks the validity of the entered email address.If the email is valid, an alert confirms the submission, and the form resets.If invalid, an error message is displayed dynamically below the input field.Complete Code HTML <html> <head> <style> * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: Arial, sans-serif; background-color: #f4f4f4; display: flex; justify-content: center; align-items: center; height: 100vh; } .container { background-color: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); width: 100%; max-width: 400px; } h2 { text-align: center; margin-bottom: 20px; } form { display: flex; flex-direction: column; } label { margin-bottom: 8px; font-size: 16px; } input[type="text"] { padding: 10px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 4px; font-size: 16px; } button { padding: 10px; background-color: #4CAF50; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; } button:hover { background-color: #45a049; } .error-message { color: red; font-size: 14px; display: none; margin-bottom: 15px; } </style> </head> <body> <div class="container"> <h2>Email Validation Form</h2> <form id="emailForm"> <label for="email">Enter your email:</label> <input type="text" id="email" name="email" placeholder="[email protected]" required> <span id="error-message" class="error-message"></span> <button type="submit">Submit</button> </form> </div> <script> document.getElementById("emailForm").addEventListener("submit", function (event) { event.preventDefault(); const email = document.getElementById("email").value; const errMsg = document.getElementById("error-message"); const pattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/; if (pattern.test(email)) { errMsg.style.display = "none"; alert("Email is valid! Form Submitted."); document.getElementById("emailForm").reset(); } else { errMsg.style.display = "block"; errMsg.textContent = "Please enter a valid email address."; } }); </script> </body> </html> Comment More infoAdvertise with us Next Article JavaScript Application For Email Validation P pranjalonj7 Follow Improve Article Tags : HTML JavaScript-Projects Similar Reads JavaScript Form Validation JavaScript form validation checks user input before submitting the form to ensure it's correct. It helps catch errors and improves the user experience.What we are going to CreateIn this article, we will guide you through creating a form validation application. This application will validate essentia 10 min read JavaScript - How to Validate Form Using Regular Expression? To validate a form in JavaScript, you can use Regular Expressions (RegExp) to ensure that user input follows the correct format. In this article, we'll explore how to validate common form fields such as email, phone number, and password using RegExp patterns.1. Validating an Email AddressOne of the 4 min read Form validation using the jbvalidator Plugin jbvalidator is a jQuery and Bootstrap based plugin which supports both client and server form validations. The provided HTML data attributes are easy to use and understand. The plugin gives multi-language facilities along with custom validation rules and messages.The plugin can be used by downloadin 4 min read How to create form validation by using only HTML ? In Web Development, we often use JavaScript with HTML to validate the form, but we can also do the same via HTML in the following ways. HTML <input> required Attribute HTML <input> type Attribute HTML <input> pattern Attribute HTML <input> required Attribute: In input tag of 2 min read How to perform form validation for a required field in HTML ? Performing form validation for a required field in HTML ensures that a user must fill in specific fields before submitting a form. This is typically done using the required attribute, which prevents form submission if the field is left blank, ensuring proper data input.Table of ContentRequired attri 4 min read How to Display an Error for Invalid Input with PHP/HTML? PHP can be easily embedded in HTML files, and HTML code can also be written in a PHP file. The key difference between PHP and a client-side language like HTML is that PHP code is executed on the server, while HTML code is directly rendered in the browser. To display errors for invalid input using HT 2 min read How To Validate Input Field In The HTML Form? Input fields are essential components of HTML forms, enabling users to provide data for processing. Ensuring proper validation of these input fields enhances user experience and prevents errors or malicious inputs. What We Are Going to Create?We will create simple Validating Input Fields in HTML For 3 min read How to create a text that permit to send email in HTML document when button is clicked ? In this article, we will learn How to create the text that permits sending the email in the HTML document when the button is clicked. We can simply create a form that can be used for creating the text i.e body of the message as well as it can be used for sending the email to the respective address.T 2 min read Check if Email Address is Valid or not in Java Validating email addresses means they meet the correct format by avoiding invalid inputs. To Validate email addresses in Java, we can use Regular Expressions (Regex).Example:The below example example uses Pattern and Matcher from the java.util.regex package to validate email addresses.Java// Java pr 1 min read How to Write Email Validation Test Cases? Email validation is a critical part of any web application. It ensures that users are entering valid email addresses, which can be used for communication and authentication. Writing email validation test cases can be tricky, as there are a lot of different things to consider. Email validation test c 10 min read Like