Question

What are the function parameter rules?

Answer 1

JavaScript functions follow below rules for parameters,

1. The function definitions do not specify data types for parameters.
2. Do not perform type checking on the passed arguments.
3. Do not check the number of arguments received. i.e, The below function follows the above rules,

function functionName(parameter1, parameter2, parameter3) {
  console.log(parameter1); // 1
}
functionName(1);