What are the different parameter types in JavaScript?

What are the different parameter types in JavaScript?

In JavaScript, parameters can be of various types, including primitive types like numbers, strings, booleans, and complex types like objects and arrays.

Can you give me examples of each type?

Sure! For numbers, you can use let num = 5;. For strings, let str = 'Hello';. For booleans, let isTrue = true;. For objects, let obj = { key: 'value' }; and for arrays, let arr = [1, 2, 3];.

What about default parameters?

Default parameters allow you to initialize named parameters with default values if no value or undefined is passed. For example: function greet(name = 'Guest') { return 'Hello ' + name; }.

How do rest parameters work?

Rest parameters allow you to represent an indefinite number of arguments as an array. You can use it like this: function sum(...numbers) { return numbers.reduce((acc, num) => acc + num, 0); }.