I will fix javascript bugs, errors, frontend issues, api error fix and browser problem


About this gig
Hello:
Facing JavaScript errors or broken functionality? I will debug and fix JavaScript, React, Vue, Angular, Node.js, AJAX, API, DOM and frontend issues. I troubleshoot the root cause, implement clean fixes, test the affected functionality and deliver reliable, maintainable code.
Service:
- JavaScript bug and error fixing
- JavaScript and DOM debugging
- Console error | Syntax error | Runtime error | Type error and Logic error fixing
- Event handler fixes
- Form validation fixes
- AJAX bug fixing
- Fetch API debugging
- REST API troubleshooting
- JSON parsing fixes
- CORS troubleshooting
- Promise debugging
- Async/await fixes
- JavaScript performance optimization
- Browser compatibility fixes
- React bug fixing
- React debugging
- Vue.js bug fixing
- Angular debugging
- Next.js bug fixing
- jQuery debugging
- Node.js bug fixing
- Express.js debugging
- NestJS troubleshooting
- Koa debugging
- Frontend bug fixing
- UI interaction fixes
- JavaScript form fixes
- Dynamic content fixes
- Authentication debugging
- JavaScript API integration
- Third-party API and JavaScript deployment troubleshooting
- Legacy JavaScript maintenance
- Custom JavaScript debugging
Why choose me?
- Root cause investment
- Frontend + backend understanding
Thanks!!!
Get to know Horllah FixBug
Full Stack Web Developer PHP JavaScript WordPress and Frontend Fixes
- FromUnited States
- Member sinceSep 2026
Languages
English, Arabic, French, Italian, Spanish, German, Czech, Persian
FAQ
What JavaScript bugs can you fix?
I can troubleshoot syntax, runtime, type, reference, logic, DOM, event, asynchronous, API, AJAX, browser compatibility and framework-related JavaScript problems.
Can you fix React bugs?
Yes. I can troubleshoot React components, state, props, hooks, events, API calls, rendering issues, routing and other problems within the agreed project scope.
Can you fix Node.js errors?
Yes. I can troubleshoot Node.js application errors, API routes, asynchronous operations, dependencies, server-side JavaScript and related backend issues.
Can you fix Vue.js problems?
Yes. I can investigate Vue components, reactive data, events, API calls, routing and other JavaScript-related issues where the problem is within the agreed scope.
Can you fix Angular errors?
Yes. I can troubleshoot Angular components, services, routing, API requests, forms, TypeScript/JavaScript interactions and related application issues.
Can you fix AJAX problems?
Yes. I can troubleshoot AJAX requests, responses, callbacks, JSON handling, server communication and related frontend/backend integration problems.
Can you fix Fetch API errors?
Yes. I can investigate Fetch requests, HTTP responses, JSON parsing, asynchronous handling, authentication and related client-side API problems.
Can you fix CORS errors?
Yes. I can investigate CORS-related problems and identify whether the issue originates from the browser, frontend request, API configuration or server response.
Can you fix JavaScript console errors?
Yes. Console errors are useful diagnostic information. I can analyze the error, trace the relevant code and implement an appropriate correction.
What do you need before starting?
Please provide the relevant source code or repository, a description of the problem, error messages or screenshots, reproduction steps and the relevant technical environment.

