Login Page Codepen

Log in here

Are you looking to make a login page for your website but are unsure of how to begin? Don’t worry, you’re in good hands. In this article, I will walk you through the steps of creating a login page using CodePen, a widely used online code editor and community.

Introduction to CodePen

CodePen is an online playground for front-end developers, allowing them to write and showcase HTML, CSS, and JavaScript code snippets. It provides an easy-to-use interface that enables developers to experiment with different code snippets and see the results in real-time.

Creating an HTML Structure

The first step in creating a login page is to define the HTML structure. Start by opening CodePen and creating a new HTML document. You can do this by clicking on the “New Pen” button on the top right corner of the screen.

Next, let’s create the basic structure of the login page. We’ll need a form element to contain the login inputs, such as username and password. Inside the form, we’ll have input fields for the username and password, as well as a submit button.


<form>
  <input type="text" name="username" placeholder="Username">
  <input type="password" name="password" placeholder="Password">
  <input type="submit" value="Log In">
</form>


Feel free to add your own personal touches to the HTML structure. You can add additional form elements, customize the styling, or even add a logo or background image to make it unique to your website.

Styling the Login Page

Now that we have the basic HTML structure in place, let’s move on to styling the login page. CodePen provides a CSS editor where you can write your styles and see the changes in real-time.

Start by adding some CSS to style the form and input fields. You can apply different colors, fonts, and sizes to make the login page visually appealing.


form {
  background-color: #f2f2f2;
  padding: 20px;
  border-radius: 5px;
}

input[type="submit"] {
  background-color: #4CAF50;
  color: white;
  cursor: pointer;
}


Feel free to explore different CSS properties and experiment with the styling. You can also add additional styles to customize the login page according to your preferences.

Adding Functionality with JavaScript

A login page is not complete without some functionality. For this, we’ll use JavaScript to validate the user inputs and perform the necessary actions.

CodePen allows you to add JavaScript code to your project. You can access the JavaScript editor by clicking on the “JS” button at the top of the screen.

Let’s start by writing a JavaScript function to validate the form inputs. We’ll check if the username and password fields are empty and display an error message if they are.


function validateForm() {
  var username = document.forms["loginForm"]["username"].value;
  var password = document.forms["loginForm"]["password"].value;

  if (username == "" || password == "") {
    alert("Please fill in all fields.");
    return false;
  }
}


Don’t forget to add the onsubmit attribute to the form element to call the validateForm function when the form is submitted.


<form onsubmit="return validateForm()">
  
</form>


Feel free to add additional JavaScript code to handle other functionalities, such as authentication, redirection, or storing user data in a database.

Conclusion

Congratulations! You have successfully created a login page using CodePen. In this article, we covered the basics of creating an HTML structure, styling the login page with CSS, and adding functionality with JavaScript.

Remember, this is just the starting point. You can further enhance the login page by adding more features, improving the design, or integrating it into your website or web application.

If you want to see the final result and play around with the code, you can access the CodePen project here. Happy coding!