Email Validation Using Regular Expressions
This function uses a regular expression (emailRegex) to define the pattern for a valid email address. The function then checks if the provided email address matches the pattern using the
test() method. The function returns true if the email address is valid and false otherwise.
Email Validation Using HTML5 Input Attributes
HTML5 provides a built-in way to validate email addresses using the input element’s type and pattern attributes:
Adding Custom Validation Messages
You can add custom validation messages using the
This code snippet adds an event listener to the email input field. If the email address is not valid, a custom validation message is displayed using the
While client-side validation is essential for a good user experience, it is crucial to validate user inputs on the server-side as well. This helps protect your application against malicious inputs and ensures data integrity.
A server-side validation solution depends on your back-end technology. Common server-side programming languages like PHP, Node.js, and Python have libraries or built-in functions for email validation.
By validating email addresses in your application, you can reduce errors, prevent spam, and ensure that messages are sent to the correct recipients.