Category "javascript"

What's the difference between using "let" and "var"?

ECMAScript 6 introduced the let statement. I've heard that it's described as a local variable, but I'm still not quite sure how it behaves differently than the

Regex for allowing words which have only first letter as uppercase?

I am trying to make a regex which will validate if all the words have their first letter as upper case. ex like Fruits is allowed but fruits is not allowed. als

Firebase v9 modular - How do you use onSnapshot to return an observable?

I'm trying to use Firebase v9 modular version and I'm confused as to how to use onSnapshot. I'm trying to execute a query and listen to the documents. Following

Upgrading Sencha ExtJs from 4.2.2 to 6.0.0

My application's front-end was build long back on ExtJS version 4.2.2 ,so Sencha Cmd tool was not used at that time , I am new to ExtJS and wants to know what a

run exe on click of the button using js node in Adobe CEP

I'm developing a js CEP panel for Adobe Premiere Pro. I know how to run exe concurrently with my panel. Here is a simple code and it works: var csInterface = ne

How to write typescript with constructor function/new keyword?

This is an example from MDN docs for the usage of new keyword function Car(make, model, year) { this.make = make; this.model = model; this.year = year; }

how to fetch enitre column values in sfmc/email from data extension. Using ampscript

how to fetch enitre column values in sfmc/email from data extension. Using ampscript? eg. countries -> column name Australia Singapore Malaysian newZealand a

Unable to reach Expo servers. Cannot Load app onto Phone or simulator when developing in React Native

When loading up my app it says in the command prompt: Unable to reach Expo servers. Falling back to using the cached dependency map (bundledNativeModules.json)

I am trying to set a cookie in supertest but it does not work

I am trying to set a cookie session to a post request in supertest but I cannot. This is my test code: const app = express(); app.set("trust proxy", true); app

(JavaScript) Best was to check for multiple conditions and end execution as soon as one returns false?

I am currently working on a duty rota App. I need to calculate which employee can work on every particular day of the month. This must also be updated "on the f

app.css error when compiled with ruby sass from app.scss

I'm trying to build my project with gulp, and the app.scss file is compiled with ruby sass. The problem is the app.css gets error and cannot be applied to brows

Can I export multiple named exports in a named set without affecting call to variable?

I have constants file with: export const VAR1 = 'VAR1'; export const VAR2 = 'VAR2'; export const VAR3 = 'VAR3'; export const VAR4 = 'VAR4'; export const VAR5 =

How do I add delay within a function in Javascript

I am trying to create a simple function when on click a series of style changes happen to an element. I want to add a 4-second delay in between the two style ch

Warning: Failed prop type: The prop `history` is marked as required in `Router`, but its value is `undefined`

So I'm a beginner in react, and I'm racking my brain to try to solve the error and still I'm not getting it... I've already messed with this code below, to try

Phaser 3: Clone Sprite on click & drag immediately

I have a sprite that works as a button, but as you press it, it duplicates and lets you drag the duplicate. I've almost got it to work, however currently you ha

Sencha ExtJS skipping rows with Checkboxmodel's select all box

I am trying to make a checkbox grid that some of the values are read only (it is a list of features and some features are required but I want the user to be abl

need for json loader in webpack 5

I want to import .geojson file extension just like .json files (I don't need any special parsing). as I seen in webpack docs: Since webpack >= v2.0.0, impor

Lottie Player got deleted immediately after page load

Folks my Lottie player HTML element is got deleted every time the page loads. The website is on WordPress and the Lottie player code is infused through a custom

React-Webcam Recording, Replay, Re-recording, Storing

Just making a video recording component that you can replay afterwards to see if you like it, if not you just re-record, and finally it will store it in the dat

React navigation via props.history.back

In my React app, I have different routes. Now, if I bookmark one of the URLs (which has a Back btn) and if user goes back (either browser or via the Back btn),