Bolt
ui
Event Handlers Not Firing - onClick, onChange Not Working
You add onClick, onChange, or other event handlers to elements but they never fire. The function is defined but not being called when the event occurs.
Sometimes works in one component but not another. No console errors.
Error Messages You Might See
onClick fires immediately on render
Event handler undefined
Clickable element not responding to clicks
handleClick is not a function
Common Causes
- Calling function instead of passing reference: onClick={handleClick()} instead of onClick={handleClick}
- Event handler called with wrong context (this binding issue)
- Event delegation not working - handler on parent not capturing child events
- Element disabled or has pointer-events: none
- Event handler overridden or removed after mount
How to Fix It
Pass function reference, not invocation: onClick={handleClick} not onClick={handleClick()}
To pass arguments: onClick={() => handleClick(id)} or onClick={e => handleClick(e, id)}
For disabled state: use disabled prop, not conditional rendering
Check element in DevTools - is it actually in the DOM and visible?
Use React DevTools Profiler to see if component is re-rendering on click
Real developers can help you.
Nam Tran
10 years as fullstack developer
Simon A.
I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows.
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
Bastien Labelle
Full stack dev w/ 20+ years of experience
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
rayush33
JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems
Luca Liberati
I work on monoliths and microservices, backends and frontends, manage K8s clusters and love to design apps architecture
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
What's the difference between onClick={fn} and onClick={fn()}?
fn is a reference, fires when clicked. fn() calls immediately on render. Use fn() => fn(args) to pass arguments
Why does my event fire immediately?
You're calling the function onClick={fn()} instead of passing reference onClick={fn}
How do I pass arguments to event handlers?
Use arrow function: onClick={() => handleClick(id, name)}