What does the "new" mean in the example of adding methods??

Question

p = new function_name()

Answer 1

function person(name, age) {
this.name= name;
this.age = age;
this.yearOfBirth = bornYear;
}

var p = new person("A", 22);

"new" is used to create a new instance of the person object and assigns it to "p" variable.
The result is:

p.name is initialized to "A"
p.age is initialized to 22

Answer 2

p = new function_name()

"new" creates an instance of function_name object
"=" is used to assign the created instance of function_name to "p"

Answer 3

What is it betwen x and 2