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I have a small web app built with React, Node, and Express that’s showing a stubborn user-interaction bug on the front end. When users click a certain button the UI sometimes freezes instead of updating state, even though the API call behind it completes successfully. Here’s what I need from you: first, pull the existing repo, scan the relevant React component and the accompanying Express endpoint so you understand the data flow, then isolate and fix the issue so the button works reliably every time. The stack is plain React (no Redux), Node/Express, JavaScript with modern ES features, and a simple REST API that returns JSON from a MongoDB collection. Clean, maintainable code is important, so please follow the current project conventions, comment any non-obvious logic, and keep the fix focused on the UI layer unless the root cause sits deeper. Once you’ve patched it, run whatever unit or component tests you feel are appropriate, verify the interaction works smoothly across Chrome, Firefox, and Safari, and send back a short summary of what changed along with the updated source. Deliverables: • Updated code (React component, any companion files) pushed to the repo or supplied as a diff • Confirmation that the interaction now behaves correctly in the three browsers mentioned • Brief change log explaining the fix and any new tests added If this quick task goes well, I’ll have more React/Node enhancements waiting. I look forward to your solution.
Project ID: 40727442
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I can help you isolate and fix this React state/update issue without overcomplicating the existing codebase. I have 8+ years of experience working with React, Node.js, Express, JavaScript, REST APIs, MongoDB, and production web applications. From your description, the API is completing successfully, so I would first trace the button interaction from the React event handler through the state update and API response, then identify where the UI is getting stuck. My approach would be: * Pull and review the existing repository and relevant React component. * Trace the Express endpoint and JSON data flow back to the UI. * Reproduce the freeze and identify the actual state/rendering issue. * Apply a focused fix following your existing project conventions. * Add or update appropriate component/unit tests. * Verify the interaction in Chrome, Firefox, and Safari. * Provide the updated code/diff and a concise change summary. I’ll keep the change focused and avoid modifying the backend unless the investigation shows that it is contributing to the problem. I’m available to start immediately and can also handle the additional React/Node enhancements you mentioned after this fix.
€19 EUR in 2 days
3.5
3.5
60 freelancers are bidding on average €21 EUR for this job

Hi, I went through your project details and understand what you're looking to achieve. I'd be interested in working with you on this. Based on the requirements you've shared, I can handle the project from start to completion while keeping the work aligned with your expectations, timeline, and desired outcome. My approach is straightforward: first, I'll make sure the requirements and expected deliverables are clear. Then I'll complete the work in structured stages, share progress along the way, incorporate your feedback, and deliver the final work after everything has been reviewed. Before we begin, I have a couple of questions about your requirements that will help me understand the scope more accurately. Feel free to message me so we can discuss the details and determine the best way to move forward. Best regards, Anum
€90 EUR in 1 day
6.8
6.8

As an experienced Senior Software Engineer, I bring not only a deep understanding of the React stack including plain React, Node/Express, but a comprehensive knowledge of modern JavaScript and ES features that would be instrumental in isolating and fixing your UI interaction bug. With my capabilities, I can effectively navigate through the web app's components and REST API to identify the root cause of the issue, keeping in mind your requirement for clean, maintainable code. My commitment to detail will ensure I comment on any non-obvious logic and keep the fix focused on the UI layer. Additionally, my extensive experience with JavaScript encompasses thorough unit testing, which means I can go beyond just fixing the issue on hand to running necessary tests to verify a smooth interaction across Chrome, Firefox, and Safari. Thus guaranteeing that you receive top-notch, thoroughly tested work. Furthermore, my exposure to other useful tools like NestJs, NextJs and Laravel make me adaptable to future enhancements you might need after this project. All APIs will be provided with proper authentication and authorization. Users will have access only to those resources for which they are allowed. My dedication slogan is borrowed from Oscar Wilde: "I don't do extraordinarily smooth working with long-term relationships." I'm looking forward to tackling this initial task with precision and exceeding your expectations.
€30 EUR in 1 day
6.3
6.3

Hi, I will develop a dynamic and secure React.js/Next.js web application. I’ll ensure it has all required functionalities, Robust, Secure, User frinedly. My Skills Include: a) Next,Js, React.js Development: Expertise in building and customizing web applications. b) Frontend Technologies: Proficient in Tailwind, Bootstrap, and JQuery. c) Backend Technologies: Experienced with Node.js, Laravel, Python. d) Database Management: Skilled in Postgresql, MySQL, MongoDB. e) Server Handling: Knowledgeable in AWS, Google Cloud, VPS, Apache, and Nginx. I will share my previous web applications in private chat. Lets connect in chat so that We discuss further. With Regards, Sai
€30 EUR in 2 days
6.4
6.4

Hello, I can investigate the React interaction freeze by tracing the button handler, state updates, REST request lifecycle, and related Express response flow. I’ll keep the patch focused, follow your existing conventions, add targeted component tests where useful, and verify behavior across Chrome, Firefox, and Safari. I’ll also provide a concise change log and updated source or diff, with attention to preventing race conditions and unhandled state transitions. Check out my portfolio here:- https://www.freelancer.com/u/installerpoint Best Regards, Muhammad Adeel
€30 EUR in 2 days
6.6
6.6

Hi, I can trace the React state flow from the button through the REST request and Express endpoint, reproduce the freeze, identify the actual root cause and apply a focused fix without unnecessarily changing the backend. I’ll follow the existing project conventions, add targeted tests where useful, and verify the interaction across Chrome, Firefox and Safari before providing the updated source and concise change summary. Questione 1: Can you provide the repository and the exact component or button where the issue occurs? Questione 2: Is the freeze consistently reproducible under a specific response, timing or user interaction pattern? Regards, Houssame.
€8 EUR in 1 day
6.2
6.2

Hi, I can investigate the React interaction flow, trace the state update through the Express endpoint, and isolate why the completed API response is not consistently updating the UI. I’ll keep the patch focused, follow the existing JavaScript conventions, document any non-obvious logic, and add targeted component or unit coverage where appropriate. I’ll also verify the corrected behavior in Chrome, Firefox, and Safari and provide the updated source with a concise change summary. As a useful improvement, I’ll review the loading and error states to prevent similar freezes during future requests. Regards
€30 EUR in 2 days
5.7
5.7

Greetings, I appreciate the opportunity to help with your React UI interaction bug. It seems like the issue arises when a specific button is clicked, causing the UI to freeze despite successful API calls. To tackle this, I would pull the existing repository, examine the relevant React component and the Express endpoint to understand how data flows through your app. My focus would be on isolating the root of the problem within the UI layer. I will ensure the code remains clean and maintainable, commenting on any complex logic. After applying the fix, I'll run the necessary tests to confirm that the interaction works seamlessly across Chrome, Firefox, and Safari, and provide a brief summary of the changes made. Looking forward to resolving this for you! Best regards, Saba Ehsan
€25 EUR in 2 days
5.7
5.7

Hello there. I hope you are donig well. I have a proven track record in troubleshooting and optimizing React applications, ensuring seamless user interactions. My experience with both frontend and backend technologies equips me to understand the complete data flow and identify issues effectively. I understand that your React app is experiencing a UI freeze upon button clicks, despite successful API calls. I will pull the repo, analyze the relevant components, and isolate the bug to implement a reliable fix, ensuring smooth functionality across all specified browsers. I will deliver high-quality, maintainable code that adheres to your project's conventions. Along with the updated source, I will provide a brief change log detailing the fix and any new tests added, ensuring a comprehensive solution that enhances user experience. Please feel free to reach out to me. I look forward to working with you. Best regards, Billy Bryan
€8 EUR in 3 days
5.3
5.3

Hi, I understand you're dealing with a persistent UI interaction bug in your React-based web app, where clicking a button occasionally causes the interface to freeze despite a successful API call. This kind of issue can be particularly challenging as it involves both frontend and backend coordination. The main technical challenge here lies in identifying the root cause of the state management failure in React, which might be due to asynchronous handling or incorrect lifecycle methods. My approach will begin with a thorough assessment of the React component and the Express endpoint to ensure the state is managed correctly and efficiently. Ensuring stability and responsiveness is critical. I have extensive experience in troubleshooting similar issues in JavaScript and React applications, having resolved state management problems in previous projects. Q1 – Can you specify which state management library you are using, if any, such as Redux or Context API? Q2 – Are there any console errors or warnings when the UI freeze occurs? Q3 – Could you provide more details about the button functionality and its expected behavior post-click? Looking forward to hearing from you.
€10 EUR in 7 days
5.5
5.5

The symptom points to a front-end state/race issue rather than the API itself, so I’d trace the button handler, async flow, loading flags, stale closures and component re-renders before touching the backend. I work with React, Node/Express, REST APIs and MongoDB. I’ll keep the patch minimal, add focused tests around the interaction, verify Chrome/Firefox/Safari behavior, and return the diff with a short root-cause/change summary.
€8 EUR in 7 days
5.4
5.4

As a highly seasoned software developer, my decade-long experience would come to bear in resolving the interface reluctance issue of your React app. My proficiency cuts across a wide range of tech stacks including AngularJS, JavaScript, React.js, and Node.js which empowers me to quickly identify and address front-end bugs. In line with your project requirements, I would keenly review the existing codebase, dissecting the pertinent React component and Express end-point to grasp the flow of information. Utilizing my well-honed skills in developing clean and maintainable codebases, I'll fix the bug while adhering to established company conventions. Additionally, I ensure that even though the solution may be localized to the UI layer, I'll explore possible deeper issues. I'll thoroughly test to guarantee smooth interactivity of the improved button across Chrome, Firefox, and Safari ensuring it functions as required at all times. Finally, I'll provide a comprehensive log summarizing the changes made along with any newly introduced tests—proving once again my meticulousness and attention to detail you can depend on for this and future projects.
€19 EUR in 2 days
5.3
5.3

Hi there, I understand you need to debug a React UI interaction issue where the API completes successfully but the frontend sometimes freezes instead of updating state. I have strong experience with React, JavaScript/ES6+, Node.js, Express, REST APIs, MongoDB and frontend debugging. I’ll trace the complete flow from the button event through the React state update and API response, identify the actual cause, and keep the fix focused and maintainable. I’ll avoid unnecessary backend changes unless the investigation shows that the root cause is actually there. One quick question: can you provide the repository access and the specific button/component where the issue occurs so I can start tracing the interaction? Best regards, Amarjeet
€18 EUR in 3 days
5.2
5.2

The React button freeze, despite a successful Express response, points to a state-update, promise-handling, or component lifecycle issue that needs tracing through the complete data flow. I can inspect the repository, follow the React-to-Express request path, isolate the failure, and provide a focused fix consistent with the existing JavaScript conventions. I will avoid unnecessary backend changes unless the endpoint or response handling is the actual cause. I’ll add comments only where logic is non-obvious, run appropriate component or unit tests, and verify the interaction in Chrome, Firefox, and Safari. I’ll also provide the updated source and a concise change log covering the fix and tests. Regards, Muhammad
€30 EUR in 2 days
4.9
4.9

Hi, I’m Abeer Ahmed, a web developer experienced with React, Node.js, Express and REST APIs. I can trace the complete data flow from the React component to the Express/MongoDB endpoint, identify why the UI state is freezing, and apply a focused, maintainable fix without affecting unrelated functionality. I’ll test the fix thoroughly, add/update relevant tests, and verify the interaction across Chrome, Firefox and Safari. I can also provide a clear change log and updated source/diff. Please share the repository access and the affected button/component details so I can start.
€15 EUR in 1 day
5.0
5.0

> When users click a certain button the UI sometimes freezes instead of updating state, even though the API call behind it completes successfully. How coupled is this button to the UI, rest of the application? E.g. is the button a component? My usual approach for this would be to use storybook to isolate the button component and run a variation of tests to see if something breaks.
€30 EUR in 1 day
5.0
5.0

Hi, there. I understand the issue is not the API itself, but the React interaction where the button can freeze even though the Express request completes successfully. I’d trace the component’s event flow, async state updates, response handling, and rendering path first, then keep the fix focused and consistent with the existing React/Node conventions. Rather than relying on words, I can build a working demo to demonstrate the approach, functionality, and quality firsthand shortly. My relevant work includes JavaScript applications, API integrations, SaaS systems, and web applications where frontend interactions depend on backend responses. I can work directly with the existing repository, isolate the actual cause, apply a minimal fix, and add targeted tests without unnecessarily changing working code. The demo can reproduce the interaction, show the corrected state flow, and verify the behavior across Chrome, Firefox, and Safari before delivering the updated source and concise change summary. Would you like me to build a working demo for you? I hope we discuss more about the project in chat. Thanks, Fernando Garcia
€19 EUR in 1 day
4.3
4.3

Hi, the UI freeze on button click is likely due to a mismatch between the API call completion and the state update. I'd approach this by checking the React component's lifecycle methods and the Express endpoint's response handling. The common mistake here is not handling asynchronous updates properly, which can cause the UI to freeze. I'll set up a test to verify the API call is completing successfully and then isolate the issue in the React component. The client can expect a reliable button click interaction that updates the state correctly, with clean and maintainable code that follows the project conventions.
€15 EUR in 1 day
3.6
3.6

This could be a React state update or async handling issue. I’ll clone the repo, go through the relevant component and API flow, find the actual cause, and fix it properly. Let's chat to start right now !
€10 EUR in 1 day
3.2
3.2

Hi, Your React UI interaction bug is blocking users even when the layout looks fine, so clicks or form actions never complete the way they should. I will reproduce the broken interaction in your React app, trace the event handlers and state updates, and ship a focused fix without rewriting unrelated screens. I can deliver within your EUR 8 to 30 budget across clear milestones. Message me to get started. P.S. I noticed AngularJS in the tags alongside React. I will confirm which layer owns the broken control before I change anything.
€8 EUR in 1 day
2.7
2.7

The interaction bug is usually a stale closure or missing dependency in a useEffect, not the state logic itself. I would trace the event handler chain first, then patch it against your Express endpoints so the fix holds under real data, not just the happy path. Can start now, done within 24 hours. The 8 to 30 EUR range and timeline are based on the post as written. Once you share the repo or a screen recording of the bug, I will confirm the real number. Want to send it over so I can take a look?
€30 EUR in 2 days
2.8
2.8

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