Cursor
ui
Button onClick Handler Not Firing After Changes
Buttons that were previously clickable no longer trigger their onClick handlers after Cursor refactored the component code. Users click buttons but nothing happens.
Event handler binding or attachment may have been broken.
Error Messages You Might See
handleClick is not a function
Button click not working
No response to click
Event handler undefined
Common Causes
- onClick handler removed from JSX button element
- Handler function moved but not imported/referenced
- Handler function syntax changed (arrow vs function declaration)
- onClick handler wrapping code removed in refactoring
- Event handler 'this' context lost in class component
How to Fix It
Verify onClick is set: <button onClick={handleClick}>. Arrow functions preserve 'this': const handleClick = () => {}. In class, bind: this.handleClick = this.handleClick.bind(this). Check handler function exists and is imported.
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Get HelpFrequently Asked Questions
How do I pass arguments to onClick?
Use arrow function: onClick={() => handleClick(arg)}. Or bind in constructor.
Why is 'this' undefined in my handler?
Bind it: onClick={this.handleClick.bind(this)} or use arrow function in class.