Minor adjustments to the website (Opencart Version 1.5.5.1.2)

Budget: 15000 UAH Deadline: 20 days

I reviewed `libs.js` and already see the reason for the incompatibility: Bootstrap 3.3.6 stops execution on jQuery 3.x, and the old Slick contains deprecated methods that now only work through jQuery Migrate.

It is not necessary to completely rewrite the entire file. I will separate the libraries and custom code, update Bootstrap and Slick, fix the incompatible calls, and test the filters, menus, modals, sliders, forms, WaitList, cart, and checkout. The budget and deadlines will be discussed in private correspondence.

Are there already scenarios where users cannot use the filter, cart, or form, or is the problem currently only manifesting as warnings in the console?

Budget: 4000 UAH Deadline: 3 days

Good day, Oleg.

The task is clear: you cannot simply replace the jQuery file and stop there. If the old Bootstrap and custom functions are gathered in `assets/libs/libs.js`, the key work is to carefully rewrite this layer for jQuery 3.x, and then go through all related functionality to eliminate conflicts.

What I will do for this task:
• update jQuery to the current 3.x and connect jQuery Migrate;
• analyze the contents of `https://filtry.in.ua/assets/libs/libs.js` and adapt/rewrite incompatible parts for the new version;
• ensure that old calls, event handlers, and plugins do not break each other's functionality;
• test the functionality after the update and fix any found JS errors.

I approach such tasks as compatibility migration rather than a formal library replacement. This is important for OpenCart 1.5, where frontend logic is often tied to old versions of jQuery and combined scripts.

If convenient, I can start with an analysis of `libs.js` and immediately provide a clear picture: what exactly needs to be rewritten first and which areas are most sensitive after transitioning to jQuery 3.x.

🌐 My portfolio with recent cases:
https://mrnko.com

💼 Freelancehunt profile:
Freelancehunt

🤝 I would be happy to discuss the details, answer your questions, and offer the optimal solution for your project. Expand

Budget: 6000 UAH Deadline: 3 days

Good day, my experience is over 12 years, I will do it with the highest quality, I will be happy to collaborate.

Budget: 5000 UAH Deadline: 10 days

Good day. Your work is very interesting. I have experience in developing and maintaining code. It would be good to connect personally and start a collaboration.

Budget: 4000 UAH Deadline: 7 days

I have seen similar tasks where the project runs on old jQuery and everything is tied up in one large file like libs.js. It is important not just to update the version, but to follow the right path: first, connect jQuery Migrate to see all deprecated calls in the console, then tackle them one by one.

For libs.js, I would proceed like this: first, audit all custom functions to understand what is actually used and what can be discarded. At the same time, I will check the version of Bootstrap and compatibility with jQuery 3.x (there are known conflicts, especially with the data API). I will rewrite it in parts, checking after each block, rather than all at once.

I have about 3.5 years of experience in commercial web development, have worked with various legacy stacks and refactoring. I can read other people's code and carefully rewrite it without breaking functionality.

I am ready to start soon; if you're interested, please write, and we can discuss the details.

Budget: 4000 UAH Deadline: 4 days

Good day, I have over 2 years of experience in the field, and I will complete the work quickly and at a low price.

Budget: 4000 UAH Deadline: 3 days

Good day! We have experience working with outdated versions of Opencart and understand the risks involved in updating libraries. We will implement jQuery migration by creating a compatibility layer to maintain the functionality of all modules and the frontend. We will conduct comprehensive regression testing and resolve script conflicts to ensure the stable operation of the website.

Budget: 4000 UAH Deadline: 4 days

Good day! I will complete your task. I will update jQuery to 3.x, connect jQuery Migrate, adapt all custom scripts, and fix incompatibilities with old libraries (including Bootstrap, if needed). After the update, I will thoroughly check the functionality and fix any errors found. I can start immediately.

Budget: 4000 UAH Deadline: 4 days

Good day. I have been working with Opencart for about 10 years, including version 1.5. I am ready to complete your task. I will update jQuery, rewrite libs.js if necessary, and test all the interactivity on the site to ensure nothing is broken and everything works correctly. Feel free to reach out.

Budget: 5000 UAH Deadline: 2 days

Hello, Oleg!

I will make improvements to your website on OpenCart 1.5. I am very familiar with this version of the engine and the specifics of working with old code.

Here’s how I will solve your tasks:
1. I will carefully update jQuery to the required version and connect the Migrate plugin to maintain the functionality of all old modules on the site.
2. I will localize and resolve script conflicts (js errors in the console) between the old theme, custom scripts, and Bootstrap.
3. I will fix the responsiveness and logic of the elements you mentioned in the technical specifications.

I will do everything on a test copy or with a backup, so the main site operates without failures. I am ready to discuss the details in the chat and immediately start making code corrections.

Budget: 4000 UAH Deadline: 4 days

Good day.

I know Opencart well. Frontend and backend developer.

I am ready to complete the task.

Have a good day.

Budget: 4000 UAH Deadline: 3 days

Hello! The task is clear. Transitioning from jQuery 1.x/2.x to jQuery 3.x in conjunction with OpenCart 1.5.5.1.2 is a mandatory refactoring of the JS code, as deprecated methods (such as .live(), $.browser, etc.) that are actively used in this version of the CMS have been completely removed in jQuery 3.x.

The budget of 4,000 UAH and the remarks regarding rewriting libs.js are absolutely reasonable.

Step-by-step implementation plan:

1. Staging environment:
All work and testing will be conducted exclusively on a test copy (staging) to avoid disrupting the operation of the live store.

2. Refactoring libs.js and events:
- Connecting jQuery 3.x + jQuery Migrate (for catching and logging deprecated methods in the console).
- Rewriting custom functions and calls (.live() -> .on(), adjusting asynchronous requests, updating/adapting deprecated Bootstrap components and the libs.js bundle).
- Adapting the main common.js and OpenCart scripts to the new version of the library.

3. Comprehensive testing (QA):
- Checking the functionality of the cart, AJAX adding of products, options, modifier options.
- Testing the checkout process, the operation of filters, and mobile carousels.
- Checking the browser console for conflicts and errors.

4. Deployment to production after your acceptance.

I am ready to start immediately after access to the test environment/FTP is provided. Expand

Budget: 4000 UAH Deadline: 2 days

Hello!
I have reviewed the task. If the issue is indeed not only with updating jQuery but also with fully adapting libs.js to jQuery 3.x, then I understand what I will be working with.
I am ready to update jQuery to the latest version and include jQuery Migrate; adapt/rewrite libs.js to remove incompatibilities with old methods; check the functionality after the update; fix errors and conflicts between scripts to ensure everything works smoothly.
The estimated completion time is 2 days, depending on the number of incompatibilities in libs.js after code analysis.
I would be happy to discuss the details and get started.

Budget: 4000 UAH Deadline: 4 days

Good day.

The task is clear. In this case, simply connecting the new version of jQuery is not enough, as the site runs on an old version of OpenCart, and the libs.js file contains outdated Bootstrap, plugins, and custom functions that may use removed or changed jQuery methods.

I suggest performing the update in stages:

1. Make a backup of the current files and check all jQuery connection points to avoid loading multiple versions simultaneously.
2. Connect the current version of jQuery 3.x along with jQuery Migrate and compile a list of warnings in the console.
3. Analyze libs.js by separating third-party libraries and custom code. This will allow us to avoid rewriting the entire file blindly and identify specific incompatible functions.
4. Update or replace outdated plugins, and adapt custom functions for jQuery 3.x. Check the compatibility of the old version of Bootstrap separately.
5. Test the main scenarios of the store: menu, search, filters, product cards, modals, cart, checkout, personal account, and administrative part.
6. Fix JavaScript errors and check functionality in the current versions of Chrome, Firefox, and Safari.

It is important to make changes first on a test copy of the site, as directly updating jQuery on the live store may disrupt the cart, checkout, or individual OpenCart modules.

To start, access to the site files is needed, preferably a test copy and access to the administrative panel. After the initial analysis of libs.js, I will be able to specify the exact scope of work, as it depends on the number of outdated plugins and custom functions. Based on the results, I will provide the updated code, a list of fixes, and recommendations for further support. Expand

Budget: 4000 UAH Deadline: 2 days

Hello!

I looked at filtry.in.ua before responding. In fact: jQuery is already 2.2.1 (not 1.x — the transition to 3.x is minor), and libs.js is not custom, but a combination of Bootstrap 3.3.6 + slick + magnific-popup. Everything crashes on jQuery 3 due to Bootstrap 3.3.6: it has a strict prohibition on jQuery 3. There is no need to rewrite — just upgrade Bootstrap to 3.4.1 and include jQuery Migrate (which will also close the old jcarousel from the OpenCart core).

The main time will not be spent on replacing libraries, but on testing and catching regressions across the entire storefront (filters, cart, modals, sliders).

Question: are there any third-party modules with their own JS?

Regarding timelines and cost: 1-2 days, 4000 UAH.

Budget: 4000 UAH Deadline: 2 days

Hello. I am happy to update the jQuery version to the latest one and check the compatibility of all plugins with it. I will start working on it right away. I have experience with native .js and with jQuery and the plugins that are connected in the screenshots.

Budget: 3999 UAH Deadline: 1 day

Hello! I will complete your task quickly and efficiently.

My recent works
https://indexfast.pro - fast website indexing
https://mono-bank.pp.ua - everything about Monobank
https://mamamia.pp.ua - online store
https://programist.pp.ua/ua/portfolio/ - portfolio of works
https://monitortest.pp.ua - monitor testing
https://keytest.pp.ua - keyboard testing
https://pctest.pp.ua - computer testing
https://devroman.dev/portfolio/ - portfolio
https://vseetut.matviy.pp.ua - layout
https://indexfast.pp.ua - fast website indexing

My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Message me, I will start working today. I will be happy to collaborate with you! Expand

Budget: 3999 UAH Deadline: 4 days

Ready to update the project to the latest version of jQuery and make existing scripts compatible. Before starting, I will conduct a dependency analysis, after which I will update the library, fix any errors that arise, and test the application's functionality.

From the task description, I see that the update will not be limited to a simple replacement of jQuery. If the main logic is in libs.js and an old version of Bootstrap is used along with custom functions, adaptation and partial reworking of the existing code will be required for full compatibility with jQuery 3.x.

Budget: 4000 UAH Deadline: 1 day

Good day!

I have reviewed the task. I want to point out that this is not just an update of jQuery to version 3.x.

The file `https://filtry.in.ua/assets/libs/libs.js` contains a large amount of custom code and outdated libraries (including an old version of Bootstrap) that depend on the old jQuery API. For proper functionality, this file needs to be essentially rewritten for the modern version of jQuery, check the compatibility of all scripts, resolve conflicts, and fully test the website's functionality after the update.

I have experience with similar tasks, so I can carry out the migration effectively, rather than just updating the library, which would lead to errors. After analyzing the project, I will be able to assess the exact timelines and costs of the work.

Budget: 4000 UAH Deadline: 2 days

Good day, I am ready to help you with updating jQuery, I will do everything quickly and efficiently, feel free to contact me!

Budget: 4000 UAH Deadline: 5 days

Good day! I am ready to complete tasks related to OpenCart 1.5. I have over 10 years of experience in web development.

Budget: 4000 UAH Deadline: 5 days

Hello! ⚙️ I have experience in PHP/JavaScript and website improvements. I will update jQuery to 3.x with Migrate, rewrite compatible parts of libs.js, and check Bootstrap and all scripts for conflicts. First, I will create a backup and conduct an audit, after which I will test the functionality. ✅

Budget: 4200 UAH Deadline: 4 days

Hello, I will test and make corrections; I have experience in various projects and versions of OpenCart.
https://pprintdim.com/portfolio

Budget: 4000 UAH Deadline: 8 days

Ready to execute.
Over 12 years of experience in Web Development.
More than 7 years of experience with OpenCart 3.x, 2.x.
Examples of work https://koder.pp.ua/portfolio/

Budget: 4000 UAH Deadline: 2 days

Hello. I can do it.

Budget: 4000 UAH Deadline: 1 day

Good day!

I looked at your screenshots — the picture is clear, and there is less work here than it may seem.

You have already updated jQuery to 3.7.1, and jQuery Migrate 3.4.1 is also connected. The most important thing: there are no warnings from Migrate in the console — only a line stating that it is installed. If the old code conflicted with the new jQuery, Migrate would immediately display yellow JQMIGRATE: ...deprecated messages pointing to the problematic places. There are none — which means everything on this page is compatible and works.

Therefore, rewriting something "from scratch" here will most likely not be necessary. The real task looks like this:

Go through all the pages of the site with the console open (not just the main page — but also the catalog, filter, product card, cart, checkout), collect Migrate warnings if there are any.
Fix only those places that Migrate marks.
Test the key features: sliders (slick), popups (magnific-popup), field masks (jquery.mask), filter, and cart.
Once we are sure everything is clean — remove jQuery Migrate, it is only needed as a temporary bridge. Without it, the site will become a bit lighter.

Please clarify:

Is your Bootstrap also old and needs to be updated, or is the task only about jQuery? These are different in scope: jQuery compatibility — a few hours, migrating Bootstrap to a new version — separate work with markup and classes.
Are there pages where you have already noticed that something broke after the update?

Provide links to internal pages or access — I will go through the console and tell you exactly how many places need to be touched, along with the timeline and price.

Oleksandr Expand

Budget: 4000 UAH Deadline: 3 days

Hello, Oleg.
I have done similar projects — I know the nuances and will do exactly what is described. There are a few clarifications before starting.
The final price/timeframe after all clarifications.

Profile: Freelancehunt
Reviews: Freelancehunt

Budget: 4000 UAH Deadline: 4 days

Good.
Over 20 years of web programming experience. Ready to update jQuery and rewrite libs.js for it.

Budget: 4000 UAH Deadline: 1 day

Hello!

I have reviewed the task description. In this case, simply connecting the new version of jQuery will likely not be enough, as the common file libs.js combines third-party libraries, an old version of Bootstrap, and custom functions that may use deprecated jQuery methods.

It would be advisable to start the work by analyzing the contents of libs.js and all scripts dependent on it. After that, we can determine which libraries need to be updated or replaced, which parts of the custom code require adaptation, and which components are safer to leave unchanged. Next, it is necessary to gradually connect jQuery 3.x with jQuery Migrate, resolve warnings and compatibility errors, and then test the main functionality of the site on both mobile and desktop versions.

The testing should be conducted not only through the browser console but also through the actual operation of menus, forms, modal windows, filters, the shopping cart, the checkout process, and other interactive elements. It is preferable to perform the update first on a test copy of the site to avoid disrupting the operation of the live store.

For an accurate response regarding timelines and pricing, I would like to clarify some questions that arose after analyzing your task.

Budget: 4000 UAH Deadline: 1 day

Hello. The task is clear: I will update jQuery to the current 3.x version, connect jQuery Migrate as a diagnostic bridge, analyze and adapt libs.js considering the old Bootstrap and custom handlers, then check key scenarios and resolve conflicts and errors in the console.

I will start the work on a test copy or after a backup to avoid affecting the live store. I will deliver the updated file, a brief list of changes, and a checklist of verified scenarios.

I am ready to start immediately. I need the source files/access to the test copy and a list of critical pages: filters, product card, cart, checkout, and other important scenarios. The deadline is 1 day with ready access.

Budget: 4000 UAH Deadline: 3 days

Hello! Oleg.
I can rewrite your entire `libs.js` file to work with jQuery 3.x, replacing Bootstrap 3.3.6 with the Bootstrap 5 package, updating all custom functions to use the new API, and adding jQuery Migrate for transitional compatibility.
I will thoroughly test all interactive elements on your site and fix any console errors or non-functional features.
The complete migration and testing will take 3 working days at a fixed price of $100. I will provide a detailed list of all changes made.
Let me know if you need a staging environment set up for testing.

Budget: 3900 UAH Deadline: 5 days

The approach is as follows: first, I will analyze the libs.js structure and dependencies, then update jQuery to 3.x with jQuery Migrate. Next, I will gradually rewrite the problematic areas for the new version and check the old Bootstrap for conflicts.

I will definitely test the main functionalities: menu, sliders, forms, pop-ups, catalog, cart, and order processing. So that nothing breaks in the interactivity after the update.

I am currently free — I have no other projects in progress and will devote my full attention to yours.

After delivery, I won't disappear — if any questions arise or you want to make adjustments, I will remain in touch.

Write to me — and I will outline the plan for the first stage.

Budget: 4000 UAH Deadline: 3 days

Hello, I have been working with OpenCart for 16 years, since the time when OpenCart was not yet mainstream))

I am ready to help.

Budget: 4000 UAH Deadline: 2 days

Good day, I have been making websites for over 7 years. I am ready to make edits quickly and efficiently.

Budget: 4000 UAH Deadline: 3 days

Good afternoon. It's not enough to just update jQuery here, as the main file includes old libraries and there is custom code that may be incompatible with the new version.

First, I will check the contents of libs.js and dependencies, then I will update or replace problematic plugins, fix deprecated methods, and test the main functionality of the site: menu, sliders, forms, pop-ups, catalog, cart, and checkout.

Budget: 4000 UAH Deadline: 2 days

Hello!

I am ready to complete the task. I understand that it is not enough to just update jQuery here — adaptation (and in some places, rewriting) of `assets/libs/libs.js` will be required, as old Bootstrap and custom scripts are used.

I will update jQuery to 3.x, resolve all conflicts, test all functionality, and fix any errors found so that everything works correctly on the new version.

I look forward to collaborating!

Budget: 4000 UAH Deadline: 1 day

Hello! I have experience with JavaScript, jQuery, and Bootstrap. I can update jQuery to 3.x with jQuery Migrate and redo libs.js without losing functionality. I would be happy to help you!

Budget: 4000 UAH Deadline: 2 days

Good day.
I can fix the JS on the site.
If you have any questions, you can write to me in private messages.

Budget: 4000 UAH Deadline: 1 day

Hello. I can complete this enhancement for OpenCart 1.5: I will update jQuery to version 3.x with jQuery Migrate, analyze and rewrite the old logic in libs.js for the new version, check the compatibility of the old Bootstrap and custom scripts, after which I will test the main functions of the site to ensure nothing breaks in the cart, forms, menus, sliders, and other interactive elements. I work carefully, first checking dependencies, then making adjustments and testing the result, so the site continues to function smoothly after the update.

Budget: 4000 UAH Deadline: 2 days

Good evening. I can fix everything. Let's start by looking at what the problem is.

Budget: 4000 UAH Deadline: 4 days

Good day, I have been working in web programming for over 9 years. I work with REST APIs, frameworks, and CMS such as Django, Laravel, Yii2, WP, OpenCart, CodeIgniter, etc. I am ready to complete the task. Reviews: Freelancehunt

Budget: 4500 UAH Deadline: 5 days

I need to take a look at the website. It's unclear how you've been working with such a version for so long. No, I'm not in favor of drastic changes, but still. Maybe changing jQuery isn't necessary at all, and the essence of the improvements is just about optimizing speed. Then yes, perhaps jQuery needs to be changed. Show me the website, in short.

Budget: 4000 UAH Deadline: 14 days

Ready to tidy up the front end: update jQuery to 3.x with jQuery Migrate, completely rewrite assets/libs/libs.js, and resolve script conflicts.
A feature that is important to consider: the old Bootstrap is embedded in libs.js along with many custom functions, which may lead to hidden incompatibilities with the template and plugins.
To get started, please send access (FTP/admin panel) and clarify if there is a separate testing environment or if I should work directly on the live site.