prototype Questions
12
Solved
I am exporting the following ES6 class from one module:
export class Thingy {
hello() {
console.log("A");
}
world() {
console.log("B");
}
}
And importing it from another module:
import {...
Olson asked 10/6, 2015 at 14:14
6
Solved
STORE = {
item : function() {
}
};
STORE.item.prototype.add = function() { alert('test 123'); };
STORE.item.add();
I have been trying to figure out what's wrong with this quite a while. Why doe...
Comestible asked 20/10, 2009 at 4:9
6
Solved
I'm fairly new to the concept of JavaScript's prototype concept.
Considering the following code :
var x = function func(){
}
x.prototype.log = function() {
console.log("1");
}
var b = new x(...
Diastyle asked 22/1, 2013 at 2:43
4
I've read a ton of materials about prototypes and understand inheritance in general.
However, this is one thing that is bugging me and I cannot figure it out.
On dmitrysoshnikov.com there is a simp...
Lotte asked 7/12, 2020 at 12:16
3
Solved
If I have a constructor Quo
var Quo = function (string) {
this.status = string;
};
and then made a new object using var myQuo = new Quo("confused");
what would be the difference between:
Quo...
Bis asked 21/12, 2013 at 23:12
18
Solved
I've come to a point where I need to have some sort of rudimentary multiple inheritance happening in JavaScript. (I'm not here to discuss whether this is a good idea or not, so please kindly keep t...
Vintage asked 6/2, 2012 at 16:19
5
Solved
Is there any possibility to change the __proto__ property of an object in IE9 or IE10?
Or is MS still not planning to include it in their JS engine?
I need it in a very special situation where I n...
Companionable asked 7/12, 2011 at 10:4
3
how to round using ROUND HALF UP in javascript?
I am using Prototype JavaScript framework version 1.5.1_rc3, so I prefer to use it if available. If not, I appreciate also if you share it.
Any guid...
Looseleaf asked 16/3, 2012 at 1:51
5
Solved
I'm currently enjoying the transition from an object oriented language to a functional language. It's a breath of fresh air, and I'm finding myself much more productive than before.
However - ther...
Oaten asked 11/2, 2011 at 13:34
2
Solved
After reading this documentation:
http://es5.github.io/#x4.2.1
I was confused by the two prototype references on CF, and by this statement:
The property named CFP1 in CFp is shared by cf1, cf2,...
Clarkia asked 23/8, 2013 at 23:27
3
Solved
I am trying to understand JavaScripts Prototypal nature and I am trying to create object inheritance without using class like constructor functions.
How can I attach the prototype chain from Anima...
Merrymaking asked 9/7, 2012 at 1:33
2
Solved
Well I am curios to learn about prototypes in javascript and found many articles however i am not able to understand why am i not able to use prototypes in Object literals in javascript. As we all ...
Tannate asked 14/12, 2016 at 12:52
5
Solved
I try to extend JavaScript Math. But one thing surprised me.
When I tried to extend it by prototype
Math.prototype.randomBetween = function (a, b) {
return Math.floor(Math.random() * (b - a + 1)...
Bathsheba asked 20/12, 2014 at 13:56
3
Solved
I have an array
var arr = [' A ', ' b ', 'c'];
and I want to trim the spaces from each of the element from array.
It can be done by using Array.map as
arr.map(function(el) {
return el.trim();...
Antipasto asked 8/10, 2015 at 3:41
16
What's the difference between
var A = function () {
this.x = function () {
//do something
};
};
and
var A = function () { };
A.prototype.x = function () {
//do something
};
Digestif asked 22/11, 2008 at 4:39
9
Solved
I'm new to JavaScript. New as far as all I've really done with it is tweaked existing code and wrote small bits of jQuery.
Now I'm attempting to write a "class" with attributes and methods, but I'...
Perlaperle asked 25/10, 2010 at 3:48
3
Solved
function Ninja(){
this.swingSword = function(){
return true;
};
}
// Should return false, but will be overridden
Ninja.prototype.swingSword = function(){
return false;
};
var ninja = new Ninj...
Pyjamas asked 27/2, 2014 at 6:32
2
I would like to extend the TypeScript Map type in my react TypeScript app to allow me to use .map(), in a similar way as you might with an Array.
I found this post that describes several methods, b...
Simonsen asked 30/11, 2022 at 13:4
4
I've always seen examples of Class.prototype.method, but never instances of this.prototype.method. For example:
function Class() {
this.prototype.method = function() {
alert("is this allowed?");...
Acarology asked 2/3, 2014 at 4:42
0
This is about language design of JavaScript: why does JavaScript have both .prototype and internal .[[prototype]]?
Why it doesn't always use read-write property .prototype instead of having hidden ...
Molding asked 29/9, 2022 at 14:44
7
Solved
So lets say I've added some prototype methods to the Array class:
Array.prototype.containsKey = function(obj) {
for(var key in this)
if (key == obj) return true;
return false;
}
Array.protot...
Ryley asked 10/7, 2009 at 4:22
34
Solved
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 also references via its __proto__ prop...
Importation asked 31/3, 2012 at 21:13
4
Solved
I need do add a method to a Javascript class using the new syntax. I tried this way:
class X{
constructor() {
this.a = 'b'
}
x(){
}
}
X.prototype.y = function (){
console.log('y')
}
var...
Alcohol asked 5/3, 2016 at 12:1
3
in the classfull-Style (c++) or in the traditional Design Patterns (GofPatterns) it is really clear, what is the difference between composition and inheritance and how it is implemented and when to...
Lynda asked 18/6, 2014 at 15:1
3
Solved
In Google Chrom's javascript, objects have a property named __proto__ that points to their prototype (or parent) object.
var foo = {};
console.log(foo.__proto__ === Object.prototype); //returns t...
Izzo asked 1/12, 2016 at 21:41
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