Javascript: Create Read More / Read Less Functionality for Blog Posts

Posted this earlier, but marked a reply as an “Answer” before realizing a limitation that would not work with my code. Reposting my question. New to JS. I am creating a blog from scratch, …

How to always make “this” keyword to reference the parent class (bind child methods to parent class)?

here is the simplest form of my problem: class Service1 { constructor() { this.name = ‘service1’ } getThisName() { console.log(‘Name: ‘ + (this && this.name)) } } const service1 = new …

In javascript, what’s the difference between an instance function and instance variable of type Function?

I know one of the difference is that instance variables of type Function automatically bind to the class. For example: class Dog { sound = ‘woof’ bark() { console.log(this) } boundBark …

variable defined in one function and undefined in other typescript

I have the following code: class Currency { private counter = document.getElementById(‘counter’); private dust = 0; private books = 0; private bookCounter = document.getElementById(&…

How to access an array from the scope of a function

I’m trying to add an element into an array with the push() method but apparently, I can’t access that array from the scope of my function. Here’s a summary of my architecture : class Test{ myArray; …

How to continue running functions down the chain if an error threw?

So, I should create some functions with chains for validating, example: isValid(‘Test string’).required().isString().min(5); and function should throw an error if something isn’t comparing. I have a …

A question regarding jQuery hover(), setInterval scope, and The “this” Problem —

UPDATE — from CertainPerformance: $(“.gallery-image”).each(function() { let callInterval; $(this).hover(function(){ clearInterval(callInterval); }, function(){ callInterval = …

ES6 Classes: Bind “this” to nested functions

I have multiple nested functions in a ES6 Class. Now I wonder how I can easily bind this of the class instance to all the subfunctions. I know of… …but it feels like an awkward solution for multiple nested functions. Does anyone know of a more elegant solution? Answer You can use arrow functions. They work in rather a similar manner. The arrow notation will replace this with the value of the context of the arrow function’s scope.

Trying to understand the difference between passing ‘this’ vs. a reference to the event

I am trying to understand the differences between passing ‘this’ to a function versus passing a reference to the event itself. I am testing with two separate divs and each has a separate function for …