Check the JavaScript files

Oct 13, 2025 by wbrum.org 28 views

Introduction

Magento 2 is a powerful e-commerce platform that offers a wide range of features and customization options. However, with great power comes great complexity, and sometimes, even the most experienced developers can encounter issues. In this article, we will discuss a common problem that many Magento 2 developers face: the "Uncaught Error: Script error for: smartmenus" error.

Understanding the Error

The "Uncaught Error: Script error for: smartmenus" error is typically encountered when trying to implement a custom JavaScript library or module in Magento 2. In this case, the error is related to the Bootstrap Smartmenus library, which is a popular JavaScript library used for creating responsive and touch-friendly navigation menus.

The Problem: Custom Theme and RequireJS

When you create a custom theme in Magento 2, you need to configure the RequireJS module loader to load the necessary JavaScript files. However, if you don't configure RequireJS correctly, you may encounter issues like the "Uncaught Error: Script error for: smartmenus" error.

Vendor/Name/requirejs-config.js

The requirejs-config.js file is a critical file in Magento 2 that configures the RequireJS module loader. This file is located in the vendor directory of your theme, and it's where you define the mapping of JavaScript files to their respective modules.

Here's an example of a requirejs-config.js file:

var config = {
  map: {
    '*': {
      'jquery': 'jquery/jquery',
      'bootstrap': 'bootstrap/js/bootstrap',
      'smartmenus': 'bootstrap-smartmenus/js/smartmenus'
    }
  },
  shim: {
    'bootstrap': {
      deps: ['jquery']
    },
    'smartmenus': {
      deps: ['jquery', 'bootstrap']
    }
  }
};

In this example, we're mapping the jquery, bootstrap, and smartmenus libraries to their respective modules. We're also defining the dependencies for each library, so that RequireJS knows which libraries to load first.

The Solution: Configuring RequireJS Correctly

To fix the "Uncaught Error: Script error for: smartmenus" error, you need to configure RequireJS correctly. Here are the steps to follow:

Check the requirejs-config.js file: Make sure that the requirejs-config.js file is correctly configured to load the smartmenus library.
Check the smartmenus library: Make sure that the smartmenus library is correctly installed and configured in your theme.
Check the JavaScript files: Make sure that the JavaScript files are correctly loaded and executed in the correct order.
Check the browser console: Make sure that there are no errors in the browser console that could be causing the issue.

Example Use Case: Implementing Bootstrap Smartmenus

Here's an example of how to implement Bootstrap Smartmenus in a Magento 2 custom theme:

Install the Bootstrap Smartmenus library: Install the Bootstrap Smartmenus library using npm or yarn.
Configure the requirejs-config.js file: Configure the requirejs-config.js file to load the smartmenus library.
Create a custom JavaScript file: Create a custom JavaScript file that initializes the Bootstrap Smartmenus library.
Add the JavaScript file to the theme: Add the custom JavaScript file to the theme's requirejs-config.js file.

Here's an example of a custom JavaScript file that initializes the Bootstrap Smartmenus library:

require(['jquery', 'bootstrap', 'smartmenus'], function($, bootstrap, smartmenus) {
  $(document).ready(function() {
    $('#main-menu').smartmenus({
      subIndicators: true,
      subMenuMaxWidth: '200px',
      subMenuWidth: '200px'
    });
  });
});

In this example, we're initializing the Bootstrap Smartmenus library on the #main-menu element, and configuring it to display sub-indicators and set the sub-menu width to 200px.

Conclusion

The "Uncaught Error: Script error for: smartmenus" error is a common issue that many Magento 2 developers face when trying to implement custom JavaScript libraries or modules. By configuring RequireJS correctly and following the steps outlined in this article, you should be able to fix the issue and implement Bootstrap Smartmenus successfully in your Magento 2 custom theme.

Troubleshooting Tips

Here are some troubleshooting tips to help you fix the "Uncaught Error: Script error for: smartmenus" error:

Check the browser console: Make sure that there are no errors in the browser console that could be causing the issue.
Check the JavaScript files: Make sure that the JavaScript files are correctly loaded and executed in the correct order.
Check the requirejs-config.js file: Make sure that the requirejs-config.js file is correctly configured to load the smartmenus library.
Check the smartmenus library: Make sure that the smartmenus library is correctly installed and configured in your theme.

Introduction

In our previous article, we discussed the "Uncaught Error: Script error for: smartmenus" error in Magento 2 and provided a solution to fix the issue. However, we understand that sometimes, even with the solution, you may still encounter issues. In this article, we will provide a Q&A section to help you troubleshoot and fix the issue.

Q: What is the "Uncaught Error: Script error for: smartmenus" error?

A: The "Uncaught Error: Script error for: smartmenus" error is a common issue that many Magento 2 developers face when trying to implement custom JavaScript libraries or modules. This error occurs when the RequireJS module loader is unable to load the necessary JavaScript files, resulting in a script error.

Q: Why am I getting the "Uncaught Error: Script error for: smartmenus" error?

A: There are several reasons why you may be getting the "Uncaught Error: Script error for: smartmenus" error. Some common reasons include:

Incorrect RequireJS configuration: Make sure that the requirejs-config.js file is correctly configured to load the necessary JavaScript files.
Missing or incorrect JavaScript files: Make sure that the JavaScript files are correctly installed and configured in your theme.
Browser console errors: Check the browser console for any errors that may be causing the issue.

Q: How do I fix the "Uncaught Error: Script error for: smartmenus" error?

A: To fix the "Uncaught Error: Script error for: smartmenus" error, follow these steps:

Check the browser console: Make sure that there are no errors in the browser console that could be causing the issue.
Check the JavaScript files: Make sure that the JavaScript files are correctly loaded and executed in the correct order.
Check the requirejs-config.js file: Make sure that the requirejs-config.js file is correctly configured to load the necessary JavaScript files.
Check the smartmenus library: Make sure that the smartmenus library is correctly installed and configured in your theme.

Q: What are some common mistakes that can cause the "Uncaught Error: Script error for: smartmenus" error?

A: Some common mistakes that can cause the "Uncaught Error: Script error for: smartmenus" error include:

Incorrect RequireJS configuration: Make sure that the requirejs-config.js file is correctly configured to load the necessary JavaScript files.
Missing or incorrect JavaScript files: Make sure that the JavaScript files are correctly installed and configured in your theme.
Browser console errors: Check the browser console for any errors that may be causing the issue.

Q: How can I prevent the "Uncaught Error: Script error for: smartmenus" error in the future?

A: To prevent the "Uncaught Error: Script error for: smartmenus" error in the future, follow these best practices:

Use a consistent naming convention: Use a consistent naming convention for your JavaScript files and modules.
Use RequireJS correctly: Make sure that the requirejs-config.js file is correctly configured to load the necessary JavaScript files.
Check the browser console: Regularly check the browser console for any errors that may be causing issues.

Q: What are some additional resources that can help me troubleshoot the "Uncaught Error: Script error for: smartmenus" error?

A: Some additional resources that can help you troubleshoot the "Uncaught Error: Script error for: smartmenus" error include:

Magento 2 documentation: The official Magento 2 documentation provides detailed information on how to use RequireJS and troubleshoot common issues.
Magento 2 community forums: The Magento 2 community forums are a great resource for asking questions and getting help from other developers who have encountered similar issues.
Magento 2 tutorials and guides: There are many online tutorials and guides available that can help you learn how to use RequireJS and troubleshoot common issues.

By following these best practices and troubleshooting tips, you should be able to fix the "Uncaught Error: Script error for: smartmenus" error and implement Bootstrap Smartmenus successfully in your Magento 2 custom theme.