From the MDN docs for the standard setPrototypeOf function as well as the non-standard __proto__ property: Mutating the [[Prototype]] of an object, no matter how this is accomplished, is strongly discouraged, because it is very slow and unavo...
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...
Hi experts here is my code and I'm stuck how this keyword is adding property to a object. function carMaker(){ this.companyName='Lamborghini'; } let LamborghiniUrus = new carMaker(); carMaker.prototype.country="Italy" Lambo...
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__.<...
Why do we have 2 class Object and again Object in prototype chain of window? window --> DOMWindow --->Object --->Object ---> null Can anyone please give me some point about this design? Follwing is the output on chrome....
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,...
Several days ago,I post a question here about class inheritance Then someone provide a link-- a clever script for class inheritance by John Resig. Then I try to use this script. But I found that object created by this script will have a very deep...
I'm reading a great book called 'Javascript Enlightenment' by Cody Lindley. In the chapter that covers the prototype property it discusses how a function instance is always given a prototype property...easy enough to understand. The bold...
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