MDN has a huge scary warning about modifying the prototype in your code:      Changing the [[Prototype]] of an object is, by the nature of how   modern JavaScript engines optimize property accesses, a very slow   operation, in every browser and JavaS...
I have got the following prototype chain   SuperSuperClass  SuperClass  Class     each with a method named do.  What is the common approach for calling the respective super class method? For the moment I use <ClassName>.prototype.__proto__.<...
Can I enforce that the prototype of an object not be changed?  Note! There are some requirements:   The object should behave just like a regular object literal (add/remove/configure/modify properties and descriptors on the object), with literally the...
When I execute this in Node 4, the last statement evaluates to true, however in Node 6 it evaluates to false.  Why?  F = () => {}; F.prototype = {}; Object.create(F.prototype) instanceof F;...
A project I'm working on currently has called for an object type Chain that itself produces a type of object Link that only it uses. In previous projects, I had nested the object constructor and prototype of Link inside the constructor for Chain,...
If we create a function like:  function Rabbit() {}   We see that it inherits from the same object that Function inherits from i.e.  Rabbit.__proto__ === Function.__proto__   What is this higher object? If we try to log it it looks like : ƒ () { [na...
What does Object(0) stand for and why is it an Array instead of Object?...
I'm using Angular 1.x and I have defined two "classes": Order and OrderItem. I added a bunch of methods to them and I want to keep those methods when the API returns an object "of the same type". I know the serialized object that...
There's this Object Layout diagram nicely explains the prototype chain in javascript. But it's a bit confusing to me when it comes to the relationships between the followings:   function Object(){}  Object.prototype function Function(){} Fu...
I have an object:  var obj = {      name: "Mike" }  // and its prototype property: obj.__proto__:    say: function () {...}    walk: function () {...}   I want copy it and keep the __proto__  first I thought jQuery $.extend method:  $.extend(...

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