Simple Email Validator Using JavaScript

Submitted by razormist on Friday, July 24, 2020 - 09:31.

In this code we will try to create a Simple Email Validator using JavaScript. The program will intentionally validate the email if it can be use as an Email ID. You are free to use these code, and apply it to your working projects. To learn more about this, just follow the steps below.

Getting started:

First you have to download bootstrap framework, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.

The Main Interface

This code contains the interface of the application. To create this just write these block of code inside the text editor and save this as index.html.

<!DOCTYPE html>
<html lang="en">
        <head>
                <meta charset="UTF-8" name="viewport" content="width=device-width ,initial-scale=1"/>
                <link rel="stylesheet" type="text/css" href="css/bootstrap.css" />
        </head>
<body>
        <head>
                <nav class="navbar navbar-default">
                        <div class="container-fluid">
                                <a class="navbar-brand" href="https://sourcecodester.com">Sourcecodester</a>
                        </div>
                </nav>
        </head>
        <div class="col-md-3"></div>
        <div class="col-md-6 well">
                <h3 class="text-primary">Simple Email Validator Using JavaScript</h3>
                <hr style="border-top:1px dotted #ccc;"/>
                
                <div class="col-md-4">
                        <form>
                                <div class="form-group">
                                        <label>Enter email:</label>
                                        <input type="text" class="form-control" id="email" />
                                </div>
                                <center><button type="button" class="btn btn-primary" onclick="checkEmail();">Validate</button></center>
                                <div id="result"></div>
                        </form>
                </div>
        </div>
<script src="js/script.js"></script>    
</body> 
</html>

Creating the Script

This code contains the script of the application. The code will manually check whether the email can be use. To do this just copy and write these block of codes inside the text editor, then save it as script.js inside the js folder.

function checkEmail(){
        var email=document.getElementById('email').value;
        
        if(email==""){
                alert("Please enter something first!");
        }else{
                var emailValidate=/^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$/i;
                if(emailValidate.test(email)){
                        document.getElementById('result').innerHTML="<center><h5 class='text-success'>Email validated!</h2></center>";
                }else{
                        document.getElementById('result').innerHTML="<center><h5 class='text-danger'>Email verification failed!</h2></center>";
                }
        }       
}

There you have it we successfully created a Simple Email Validator using JavaScript. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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