In JavaScript, every object is at the same time an instance and a class. To do inheritance, you can use any object instance as a prototype. In Python, C++, etc.. there are classes, and instances, as separate concepts. In order to do inheritance, you have to use the base class to create a new class, … Read more
This question already has answers here: Use of ‘prototype’ vs. ‘this’ in JavaScript? (15 answers) Closed 1 year ago. Possible Duplicate: Use of ‘prototype’ vs. ‘this’ in JavaScript? OK, So I am somewhat new to the idea of OOP in JS. What is the difference between these two snippets of code written below: function animal(){ … Read more
One of the major advantages with Javascript is said to be that it is a prototype based language. But what does it mean that Javascript is prototype based, and why is that an advantage? 8 Answers 8
So I finally stopped dragging my feet all these years and decided to learn JavaScript “properly”. One of the most head-scratching elements of the languages design is its implementation of inheritance. Having experience in Ruby, I was really happy to see closures and dynamic typing; but for the life of me can’t figure out what … Read more
I have something like this: $scope.traveler = [ { description: ‘Senior’, Amount: 50}, { description: ‘Senior’, Amount: 50}, { description: ‘Adult’, Amount: 75}, { description: ‘Child’, Amount: 35}, { description: ‘Infant’, Amount: 25 }, ]; Now to have a total Amount of this array I’m doing something like this: $scope.totalAmount = function(){ var total = … Read more
What is the difference between the following two declarations? Class.method = function () { /* code */ } Class.prototype.method = function () { /* code using this.values */ } Is it okay to think of the first statement as a declaration of a static method, and the second statement as a declaration of an instance … Read more
