FunctionConstructor.js

/* 
If a function name starts with uppercase
It is "intended" to be used as a constructor
Imagine a "class" around it, it will make sense
*/
 
// class Person {
function Person(id, name) {
  this.id = id;
  this.name = name;
}
// }
 
// Now let's create the object
let eich = new Person(1, "Brendan");
console.log(eich.id, eich.name);
 
// OOPS.. we called is like a function
// But there is no error
let brendan = Person(2, "Wrongdon");
 
// Why error? where did id and name go?
console.log(brendan.id, brendan.name);
 
--------------------------------------
Output
--------------------------------------
console.log(brendan.id, brendan.name);
                    ^
TypeError: Cannot read property 'id' of undefined