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Email validation using Javscript regular expression
HTML
<!DOCTYPE html> <html> <head> <title>Email validation check</title> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script> <script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script> </head> <body> <div class="container"> <div class="row mt-3"> <div class="mb-3"> <label for="email" class="form-label">Email address:</label> <input type="text" id="email" class="form-control" placeholder="Email address"> </div> </div> <button class="btn btn btn-primary" id="email-validate">Validate EMail</button> <div class="mt-3" id="result"></div> </div> </body> </html>
CSS
Javascript
$(document).ready(function() { $('#email-validate').on('click', function() { var email = $("#email").val(); var result = emailValidate(email); if (result) { $("#result").html('<div class="alert alert-success">'+email+' is valid.</div>'); } else { $("#result").html('<div class="alert alert-danger">'+email + ' is not valid.</div>'); } }); }); function emailValidate(email) { const regex = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/; return regex.test(email); }
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