Passing function as arguments

Lecture 141:- Passing function as arguments

Passing functions as arguments is a common technique in JavaScript, and it allows for greater flexibility and modularity in your code.

In JavaScript, functions are first-class citizens, which means that they can be treated like any other value or data type, including being assigned to a variable, passed as an argument to another function, or returned as a value from a function.

Here's an example of passing a function as an argument:

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function add(a, b) {  return a + b; } function multiply(a, b) {  return a * b; } function doMath(operation, a, b) {  return operation(a, b); } console.log(doMath(add, 2, 3)); // Output: 5 console.log(doMath(multiply, 2, 3)); // Output: 6

In the example above, we defined three functions: add, multiply, and doMath. The doMath function takes an operation function and two arguments, and it applies the operation function to the two arguments.

We can pass different functions to the doMath function to perform different operations on the two arguments. In this case, we passed the add and multiply functions as the operation argument to doMath, and the function applied the appropriate operation to the two arguments.