Function.prototype.extends=function(ParentClass) {
this.prototype = new ParentClass();
this.prototype.constructor = this;
}
Then:
function Person() {
this.name = "anonym"
this.skills = ["abc"];
}
Person.prototype.profile = function() {
return this.skills.length // 1
};
function Student() {} //well extends fom Person Class
Student.extends(Person)
var s1 = new Student();
s1.skills.push("")
s1.profile() // 2
Please, Ignore my answer of 2015 since Javascript is now supports extends keyword since ES6 (Ecmasctipt6 )
class Person {
constructor() {
this.name = "anonym"
this.skills = ["abc"];
}
profile() {
return this.skills.length // 1
}
}
Person.MAX_SKILLS = 10;
class Student extends Person {
} //well extends from Person Class
//-----------------
var s1 = new Student();
s1.skills.push("")
s1.profile() // 2
class Person {
static MAX_SKILLS = 10;
name = "anonym"
skills = ["abc"];
profile() {
return this.skills.length // 1
}
}
class Student extends Person {
} //well extends from Person Class
//-----------------
var s1 = new Student();
s1.skills.push("")
s1.profile() // 2