JavaScript

Easily Read RSS Feeds with JavaScript: A Beginner's Guide

RSS (Really Simple Syndication) is a popular way to share content and stay up-to-date with your favorite websites. With JavaScript, it's easy to read and display RSS feeds on your own website. In this tutorial, we'll walk through the process of building a simple JavaScript application that reads and displays an RSS feed. First, we'll need to find an RSS feed to use. Many websites provide RSS feeds, and they can usually be found by adding "rss" or "feed" to the end of the website's URL. For example, my RSS fe…

Connecting to a SignalR Hub using JavaScript: A Step-by-Step Tutorial

SignalR is a powerful library for building real-time web applications. It allows you to easily add real-time functionality to your application, such as chat, notifications, and live updates. This tutorial will walk you through the process of setting up a SignalR Hub and connecting to it using JavaScript. Step 1: Create a new ASP.NET Core Web Application The first step is to create a Hub. A Hub is a class that acts as a bridge between the client and the server. It allows you to call methods on the server from the client and vice versa. First, w…

10 Must-Know Tips for Writing Clean Code With JavaScript

JavaScript is a powerful and versatile programming language that is widely used for building web applications, but it can be challenging to write clean, maintainable code. Here are 10 tips to help you write clean code with JavaScript, along with code examples to illustrate each point: Use meaningful variable and function names: Using descriptive and meaningful names for variables and functions will make it easier for other developers (or future you) to understand the purpose of your code. For example, instead of using a variable name lik…

Getting Started with JavaScript Linting: How to use ESLint for Error Checking and Code Consistency

ESLint is a popular JavaScript linter that can help you check your code for errors, inconsistencies, and potential bugs. Here's an example of how you can use ESLint to check your JavaScript code: Install ESLint: First, you need to install ESLint on your system. You can do this by running the following command in your terminal: npm install eslint --save-dev Configure ESLint: Next, you need to configure ESLint by creating a .eslintrc file in the root of your project. This file should contain the rules and settings that you want ESLint to use…

Phone Number Validation in JavaScript

In a previous post about JavaScript code to validate phone number , we learnt how to validate a phone number input field in a HubSpot contact form. Today, we are going to explore two solutions to validate phone numbers using  JavaScript . Solution #1: Phone Number Validation using JavaScript and Regex The easiest way to validate phone numbers using JavaScript would be to use Regular expressions. First off, we should make sure that the format validator should not only support  NANP (country code +1) numbers. The regex that we will use should al…

How to Compare Two Dates With JavaScript

JavaScript Date objects represent a single moment in time in a platform-independent format. Date objects contain a Number that represents milliseconds since 1 January 1970 UTC.  The Date object will do what you want - construct one for each date, then compare them using the >, <, <= or >=. The ==, !=, ===, and !== operators require you to use date.getTime() as in: var d1 = new Date (); var d2 = new Date (d1); var same = d1.getTime() === d2.getTime(); var notSame = d1.getTime() !== d2.getTime(); to be clear just checking fo…

JavaScript Escape Quotes

A JavaScript string consists of zero or more characters surrounded by quotes. JavaScript can misunderstand a literal quote enclosed inside single quotes, which is why the literal quote must be escaped with a backslash /. In this post, we are going to explore different JavaScript solutions to escape quotes and special characters. JavaScript Escape Quotes - Example 1 var text = 'I hope we\'ll see you at the party next Saturday' ; console .log( text ); //Results: "I hope we'll see you at the party next Saturday" Same …

How to get day/month/year from a date object in JavaScript?

Photo Credit: unsplash/steve_j How to format a date in JavaScript or How to get date in format 25/05/2022 in JavaScript? These are typical questions that we may need to answer when manipulating date objects using JavaScript. There is no direct function to format a date, here is what we can do to format a date object into "dd/MM/yyyy": var currentDate = new Date (); var month = currentDate.getUTCMonth() + 1 ; //getUTCMonth() returns 0-11 var day = currentDate.getUTCDate(); var year = currentDate.…

JavaScript Code to Validate Phone Number Input Based on Country (How to use libphonenumber in few steps)

While I was working on a submit form built using HubSpot marketing forms and templates. The client requested to validate the phone number field based on the selected country code. For instance, if user choose France for country code then there should be 9 digits in the phone number, so the number of digits and format should be validated according to the selected country code.  Here is a screenshot of the form: I tried many solutions but the best approach was to use an online API that can validate the pho…

JavaScript confirm or radconfirm not triggering the PostBack Event

I have a case where I need to add a confirm dialog to the "OnClientClick" event for a WebForms submit button, after adding the confirm dialog, I noticed that the PostBack event of the submit button is not working anymore. This is the html code that I added to the aspx page, note that the asp.net button is added inside RadAjaxPanel: <asp:Button ID="btnDelete" runat="server" CssClass="button" Text="Delete" OnClientClick="return confirm('Are you sure you…

How to Escape Single Quotes Within JavaScript

While I was trying to register a JavaScript code into an ASP.NET page I came across the need to ensure that passing a string to the JavaScript method would not cause an error ‘Unterminated string constant error’ upon rendering, this error could be caused if the string contains single quotes. In this post, I will discuss the issue related to escaping single or double quotes in JavaScript strings (JavaScript Escape Quotes) and I will propose some workarounds to avoid the error caused by this issue.  In t…

That is All