How do default parameters work in functions?

Can you explain how default parameters work in functions?

Sure! Default parameters allow you to specify default values for function arguments. If no value is provided, the default is used.

Can you give me an example of a function with default parameters?

Of course! Here's a simple example: function greet(name = 'Guest') { return 'Hello, ' + name; }. If you call greet(), it returns 'Hello, Guest'.

What happens if I provide a value when calling the function?

If you provide a value, that value will override the default. For example, greet('Alice') returns 'Hello, Alice'.

Are there any limitations to using default parameters?

One limitation is that default parameters are evaluated at the time of function definition, not at call time, which can lead to unexpected behavior if they depend on mutable objects.