Registration Form In HTML With Javascript Validation With Source Code

The Registration Form In HTML With Javascript Validation was developed using JavaScript, CSS and HTML, In this Javascript Project With Source Code It’s all about ensuring that the form’s validation is correct.

When the submit button is pressed, the project provides minimal mandatory form details that are validated. You may also utilize this validation to improve the look and functionality of your project.

A Registration Form Validation In Javascript Using Regular Expression Simply provide the user’s username, email address, password, and password confirmation. You can also confirm their validity by clicking the submit button.

Furthermore, the design of this project is quite basic, so the user will have no problems working on it. These validations add credibility to the concept and make it more realistic.

This Javascript Project With Source Code also includes a downloadable Project With Source Code for free, just find the downloadable source code below and click to start downloading.

I have here a suggested list of Best JavaScript Projects with Source Code Free to download and I’m sure this can help you to improve your skills in JavaScript programming and web development as a whole.

To start executing a Registration Form In HTML With Javascript Validation With Source Code, makes sure that you have any platform in creating a JavaScript, CSS, bootstrap, and HTML installed in your computer, in my case I will use Sublime Text.

Registration Form In HTML With Javascript Validation With Source Code : Steps on how to create the project

Time needed: 5 minutes

These are the steps on how to create Registration Form In HTML With Javascript Validation With Source Code

Step 1: Create a folder.
First, create a folder and named it.
Step 2: Open the folder in “Sublime Text”.
Second ,after creating a folder, open it in “sublime text“.
Step 3: Create a html file.
Third, create a “html” file and save it as “index.html“

The code given below is for the html module

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Form validation (IT SOURCECODE)</title>
</head>
<body>
<div class="container">
    <form id="form" class="form" autocomplete="off">
        <h2>Register with us</h2>
        <div class="form-control">
            <label for="username">Username</label>
            <input type="text" id="username" placeholder="Enter username">
            <small>Error message</small>
        </div>
        <div class="form-control">
            <label for="email">Email</label>
            <input type="text" id="email" placeholder="Enter email">
            <small>Error message</small>
        </div>
        <div class="form-control">
            <label for="password">Password</label>
            <input type="password" id="password" placeholder="Enter password">
            <small>Error message</small>
        </div>
        <div class="form-control">
            <label for="password2">Confirm Passsword</label>
            <input type="password" id="password2" placeholder="Enter password again">
            <small>Error message</small>
        </div>
        <button type="submit">Submit</button>
    </form>
</div>

    <script src="app.js"></script>
</body>
</html>

In this module which is the html module of the simple project.

The code given below is for the css module

<style>
    @import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@600&display=swap');

:root{
    --success-color:#2ecc71;
    --error-color: #e74c3c;
}

*{
    box-sizing: border-box;
}
body{
    background-color: #f9fafb;
    font-family:'Open Sans',sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}
.container{
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0, 0.3);
    width: 400px;

}
h2{
    text-align: center;
    margin: 0 0 20px;
}
.form{

    padding: 30px 40px;

}
.form-control{

    margin-bottom: 10px;
    padding-bottom: 20px;
    position: relative;
}
.form-control label{

   color: #777;
   display: block;
   margin-bottom: 5px;
}
.form-control input{
    border: 2px solid  #f0f0f0;
    border-radius: 4px;
    width: 100%;
    padding: 10px;
    font-size: 14px;

}
.form-control input:focus{
    outline: 0;
    border-color: #777;
}
.form-control.success input{

    border-color:var(--success-color);

}
.form-control.error input{
    border-color:var(--error-color);
}

.form-control small{
    color: var(--error-color);
    position: absolute;
    bottom: 0;
    left: 0;
    visibility: hidden;
}

.form-control.error small{

    visibility: visible;
}

.form button{
    cursor: pointer;
    background-color: #3498db;
    border: 2px sold #3498db;
    border-radius: 4px;
    color: #fff;
    display: block;
    font-size: 16px;
    padding: 10px;
    margin-top: 10px;
    width: 100%;
}
</style>

In this module which is the css module of the simple project.

The code given below is for the javascript module

<script>
    const form=document.getElementById('form');
const username=document.getElementById('username');
const email=document.getElementById('email');
const password=document.getElementById('password');
const password2=document.getElementById('password2');


//Show input error message

function showError(input,message){
    const formControl=input.parentElement;
    formControl.className='form-control error';
    const small=formControl.querySelector('small');
    small.innerText=message;
}

function showSuccess(input){
    const formControl=input.parentElement;
    formControl.className='form-control success';
    
}

//Email

function isValidEmail(email)
{
    const re= /^(([^<>()\[\]\\.,;:\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 re.test(String(email).toLowerCase());
}





form.addEventListener('submit',function(e){
    e.preventDefault();

    if(username.value===''){
        showError(username,'Username is required');
    }
    else{
        showSuccess(username);
    }
    if(email.value===''){
        showError(email,'Email is required');
    }else if(!isValidEmail(email.value)){
        showError(email,'Email is not valid');
    }
    else{
        showSuccess(email);
    }

    if(password.value===''){
        showError(password,'Password is required');
    }
    else{
        showSuccess(password);
    }
    if(password2.value===''){
        showError(password2,'confirm password is required');
    }
    else{
        showSuccess(password2);
    }

    
});




</script>

In this module which is the javascript module of the simple project.

Project Output

Registration Form In HTML With Javascript Validation Output

ABOUT PROJECT	PROJECT DETAILS
Project Name :	Registration Form In HTML With Javascript Validation
Project Platform :	JavaScript
Programming Language Used:	php,javascript,html,css
Developer Name :	itsourcecode.com
IDE Tool (Recommended):	Sublime
Project Type :	Web Application
Database:	None
Upload Date:	July 17, 2021

Downloadable Source Code

DOWNLOAD

Summary

This JavaScript Project With Source Code is simply in HTML, CSS, and JavaScript. To start creating this Simple Javascript Project With Source Code, make sure that you have basic knowledge in HTML, CSS and Javascript.

This Javascript Game Project also includes a downloadable Javascript Game Project With Source Code for free.

Inquiries

If you have any questions or suggestions about Registration Form In HTML With Javascript Validation With Source Code , please feel free to leave a comment below.

Frequently Asked Questions

How does this JavaScript login or registration system work?

Form with username + password, password hashing via bcrypt.js or server-side, JWT or session-based auth, role-based redirect, logout, password reset.

What JavaScript runtime or browser does this project need?

Pure frontend projects (vanilla JS, Vue, jQuery) run in any modern browser (Chrome 90+, Firefox 88+, Safari 14+, Edge 90+) – no install needed. Node.js projects need Node.js 18 LTS or 20 LTS (download from nodejs.org). Run: npm install in project folder, then npm start or node app.js.

How do I run this JavaScript project locally?

For pure HTML/CSS/JS: open index.html in your browser, or use VS Code Live Server extension for auto-reload. For Vue projects: npm install then npm run dev (Vite) or npm run serve (Vue CLI). For Node.js: npm install then npm start. For projects with backend (PHP+MySQL): place in XAMPP htdocs, start Apache + MySQL, browse to localhost/project.

Can I use this JavaScript project for a BSIT capstone or thesis?

Yes. Extend it: add user authentication (JWT for SPA, sessions for traditional), role-based access, real backend (Node.js+Express+MongoDB or PHP+MySQL), responsive design (Bootstrap/Tailwind), PDF exports (jsPDF), real-time features (Socket.IO). Pair with Chapter 1-5 documentation matching your panel’s rubric.

Why am I getting ‘Uncaught ReferenceError’ or ‘Cannot read property of undefined’?

Three common JavaScript issues: (1) Script tag placement wrong, put

Angel Jude Suarez

Full-Stack Developer at PIES IT Solution

Focuses on Python development, machine learning, and AI integration. Has built production AI systems including OpenAI Whisper integration for medical transcription and GPT-4o-powered diagnosis assistance. Strong background in pandas, scikit-learn, and TensorFlow.

Expertise: Python · PHP · Java · VB.NET · ASP.NET · Machine Learning · AI Integration · OpenCV · Django · CodeIgniter · View all posts by Angel Jude Suarez →

Registration Form In HTML With Javascript Validation With Source Code

Registration Form In HTML With Javascript Validation With Source Code : Steps on how to create the project

The code given below is for the html module

The code given below is for the css module

The code given below is for the javascript module

Project Output

Downloadable Source Code

Summary

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