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
handleClick is not a functionButton click not workingNo response to clickEvent handler undefined

Common Causes

  1. onClick handler removed from JSX button element
  2. Handler function moved but not imported/referenced
  3. Handler function syntax changed (arrow vs function declaration)
  4. onClick handler wrapping code removed in refactoring
  5. 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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Frequently 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.

Related Cursor Issues

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