React & Modern Frontend (445 Qs)•Part 11: Legacy Architecture, Migration Patterns & Historical Internals (354 - 445)
How to pass a parameter to an event handler or callback?
You can use an arrow function to wrap around an event handler and pass parameters:
jsx
<button onClick={() => this.handleClick(id)} />
This is an equivalent to calling .bind:
jsx
<button onClick={this.handleClick.bind(this, id)} />
Apart from these two approaches, you can also pass arguments to a function which is defined as arrow function
jsx
<button onClick={this.handleClick(id)} />;
handleClick = (id) => () => {
console.log("Hello, your ticket number is", id);
};