javascript USES prototype for single inheritance

1. Use prototype for single inheritance.

// define 1 a A class 

function A(){

}

// for A Class calls properties dynamically color, With the method sayColor

A.prototype.color = "blue";

A.prototype.sayColor = function(){

alert(this.color);

};

// To create the 1 a B class 

function B(){

}

// let B Inherited from A

B.prototype=new A(); //new Out of the A Is assigned to B The prototype, B Is included in A All the properties and methods defined in .

// Can I inherit it sayColor rewrite .

B.prototype.sayColor=function(){

alert(" rewrite ");

}

var b=new B();

b.color='red';

b.sayColor();