Category "prototype"

Parse JSON String into a Particular Object Prototype in JavaScript

I know how to parse a JSON String and turn it into a JavaScript Object. You can use JSON.parse() in modern browsers (and IE9+). That's great, but how can I t

Javascript prototype method "Cannot set property"

I'm always getting Cannot set property 'saySomething' of undefined but why? Am I making a mistake somewhere? var Person = new Object(); Person.prototype.saySo

React: Where To Extend Object Prototype

I created a pure React application using create-react-app. I would like to extend the String class and use it in one or more components. For example: String.pr

TypeError: app.get is not a function

I'm trying to use express in a prototype function ioServer() { } module.exports = ioServer; ioServer.prototype.start = function() { var app = requ

Creating a simple inventory system in JavaScript

I'm trying to make a simple text adventure/farming simulator, but I'm new to JavaScript and I'm stuck trying to plan out how my inventory system will work. The

proto VS. prototype in JavaScript

This figure again shows that every object has a prototype. Constructor function Foo also has its own __proto__ which is Function.prototype, and which in turn a

How to properly set prototype?

I'm practicing an exercise in a book called Object-Oriented JavaScript. The exercise in chapter 5 contains the following 4 questions: Create an object call