Here we have a code snippet sourced from the 30 seconds of code website. This example, intended for beginners, has left me feeling stumped.
The question arises:
const currentURL = () => window.location.href;
Why complicate things when you could just do this instead?
const currentURL = window.location.href;
One instance sets the variable currentURL to a function that retrieves window.location.href, while the other simply assigns currentURL to window.location.href.
It is important to note the distinction between these two approaches:
/*
* Function that returns the current URL
* @returns {String}
*/
const currentURL1 = () => window.location.href;
/*
* The current URL stored as a string
* @type {String}
*/
const currentURL2 = window.location.href;
console.log(currentURL1); // () => window.location.href
console.log(currentURL2); // https://stacksnippets.net/js
console.log(typeof currentURL1); // function
console.log(typeof currentURL2); // string
currentURL1(); // string
//currentURL2(); // error not a functionWhat you are witnessing is a shorthand notation for functions.
const currentURL = () => window.location.href;
This can be written as:
const currentURL = function() { return window.location.href; }
To elaborate further: The code snippet is creating a constant that holds a function, allowing it to be called later to retrieve the value instead of directly assigning it. Although this specific example may seem simple, it serves to demonstrate the concept effectively.
Hey there! I've encountered an issue with my React client and Express Server. When attempting to send data from the React client to the Express Server, it's not reaching its destination despite trying two different approaches. First Approach: U ...
I am trying to integrate a Google Alert feed into my Vue.js application, specifically on the "Dashboard.vue" component using "Feed.vue". I have successfully implemented this feature in JavaScript, but I am facing difficulties converting it to Vue.js. Curr ...
Currently, I am developing a filetree-like object that has a unique structure: var myObject = { 'name':'foo', 'contains': {'thisObject': myObject,'parentObject': /* the object that contains the cur ...
I am currently storing a value in the 'items' variable within a script tag in an HTML document. However, I now need to pass this data from 'items' to the back end in order to store it in a database. I attempted to make 'selectedTea ...
Next is my deluxe slider code. This slider displays only images but I am looking to incorporate video as well. I have searched online and tried different solutions, but haven't found one that works for me. Can someone please guide me on how to achieve ...
I have a piece of PHP code that looks like this: foreach ($questions as $q){ foreach ($answers as $a) { echo '<input type="text" id="'.$a['question_id'].'_'.$a['id_answer'].'" value="'.$ ...
Currently, I am in the process of learning the Puppeteer API with version 1.9.0. Below is the code I am using to click a button within an iframe: const changePrefsFromAllToNone = async () => { try { const browser = await puppeteer.launch ...
Vue version: 3.0.11 Here is the code snippet: <template> <button @click="inc">{{ count }}</button> </template> <script setup> import { ref } from 'vue' export const count = ref(0) export const i ...
My cone in the jsfiddle link is currently all blue, but I want to change the color of the square base to red. To do that, I need to alter the color of the two faces that make up the square base. How can this be achieved? View my cone on JsFiddle: http://j ...
I have been attempting to implement separate guards for distinct pages. Essentially, I am checking a boolean parameter to determine if a user is logged in or not. Below are the two guard.ts codes that I am using: export class IsAuthenticatedGuard implemen ...
Upon updating to nextjs version 10.1.3, I encountered an error when running yarn dev. Error - ./public/static/style.scss Error: Cannot find module 'webpack/lib/node/NodeTemplatePlugin' Require stack: - /path_to/node_modules/mini-css-extract-plugi ...
Recently, while practicing some basic tasks on a cloud IDE called Goorm, I encountered an issue with displaying a video on a simple webpage. The EJS file and the video were located in the same folder, but when I set the src attribute of the video tag to "m ...
Just starting out with Javascript and Jquery, so please bear with me if this question seems basic I'm dynamically constructing HTML like this: var favoriteresultag = '<ul>'; favoriteresultag += "<section id='"+name+"' ...
I am currently utilizing a service in angular 2 that retrieves JSON data from an API (). The code for fetching the data is depicted below: getImages() { return this.http.get(`${this.Url}`) .toPromise() .then(response => response.json() ...
Completely new to AngularJS, I am trying to understand how to use ons.enableAutoStatusBarFill(); in order to prevent my menus from overlapping the status bar. This is how I have set up my controller: var mod = ons.bootstrap('app', ['onsen& ...
**Why is my Node.js YAML file causing an error?** name: Node.js CI on: push: branches: [ "main" ] pull_request: branches: [ "main" ] jobs: build: runs-on: ubuntu-latest strategy: matrix: node-ver ...
I've encountered a particular issue: the Javascript library I am developing utilizes JSON cross-domain requests to fetch data from a backend powered by Ruby on Rails: function getData() { $.ajaxSetup({ 'beforeSend': function(xhr) {xhr.s ...
Anticipating great javascript ctags support got me considering the possibility of using a project like to configure ctags for optimum vim usage. ...
I am struggling to load my API keys from a JSON file named api.json. The file structure is as follows: { "service1": ["apikey1", "apikey2"], "service2": ["apikey1", "apikey2"] } In order to manag ...
After extensive testing on my AngularJS application, I have discovered a memory leak when using Highcharts with the latest version of jQuery (2.1.4). Below are links to two plunkers for comparison: Using jQuery 1.8.2: http://plnkr.co/edit/lQ6n5Eo2wHqt35OV ...