Binding a Function with Parameters to a React Component Using JavaScript

The Mozilla Developer Network provides documentation on the Function.bind method which has multiple solutions to optimize the binding of functions in JavaScript programs. One solution is to set arguments while calling, while another suggests to bind functions on the constructor rather than on JSX elements to avoid generating a function on every render. If you want to pass a parameter based on the event, arrow functions can be used as they preserve the context of the function, eliminating the need to use bind. It’s important to note that the difference between calling a function with parentheses and using the bind method is that the former directly calls the function, while the latter creates a new function.


Solution:


onClick={this.clicked(index)}

fails since onClick requires a function as input rather than its output. In a click handler, an event is usually passed as an argument, but in this case, the component and index are passed as ‘this’ and the first argument through the use of bind() function. You can refer to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind for more information.

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