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Recursive Functions

Recursive Functions

Learn about recursive functions in JavaScript.

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What are recursive functions?

A recursive function is one that calls itself! This might sound a bit strange, but it’s perfectly possible to place a self-referential function call inside the body of the function. The function calls itself until a certain condition is met. It’s a useful tool when iterative processes are involved.

A common example is a function that calculates the factorialFactorial is a mathematical operation represented by n! that multiplies all positive integers from 1 to n. of a number:

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function factorial(n) {
  if (n === 0) {
    return 1;
  } else {
    return n * factorial(n - 1);
  }
}

This function will return ...