is js object oriented

1JavaScript is a prototype based object oriented language, 
2  which means it doesnt have classes rather it define 
3  behaviors using constructor function and then reuse 
4it using the prototype.

1function Person(name) {
2  this.name = name;
3  this.greeting = function() {
4    alert('Hi! I\'m ' + this.name + '.');
5  };
6}

1var js = new JavaScript();
2js.isObjectOrientated = true;

1const book = {   title: "Hippie",       author: "Paulo Coelho",     year: "2018"}

1Javascript IS AN object oriented language, thus it defines behaviors
2using constructor functions.