The Poor Coder | Algorithm Solutions (Page 61)

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JavaScript querySelector - By ID

JavaScript querySelector - By ID If you are looking to select an element in your HTML document by its ID using JavaScript, you can use the querySelector method. This method is used to select one element based on a CSS selector. To select an element by its ID, you can

const handleEdit = (e) => { console.log(`edit ${e.target.getAttribute("value")}`); let idx = parseInt(e.target.getAttribute("value")) - 1; setEIdx(idx); setTargetEditCustomer(customersArr[idx]); handleEditToggle(); };

Understanding the handleEdit Function As a web developer, I have come across various functions that are used to manipulate data on web applications. One such function is handleEdit, which is used to edit customer details in an e-commerce application. The Code Let's take a closer look at the

nodemon mpn run start

What is Nodemon? Nodemon is a tool used by developers to automatically restart the server after making changes in the code. It saves time for developers to manually restart the server every time they make changes in the code. What is MPN? MPN stands for Node package manager. It is

nextjs check path in page

Next.js Check Path in Page If you want to check the path in a Next.js page, you can use the useRouter hook provided by the next/router package. This hook provides access to the current URL and allows you to check the path and query parameters. Example Code:

js window location relative path

JS Window Location Relative Path As a web developer, it's important to understand how to work with paths in JavaScript. Sometimes, you may want to get the relative path of the current page, or navigate to a new page using a relative path. This is where the window.

if javascript

If Javascript If you are a web developer, then you must have heard about the term "JavaScript". It is one of the most popular programming languages used in front-end web development. What is JavaScript? JavaScript is a high-level programming language that is used to create interactive and dynamic

jquery enable submit button

How to Enable Submit Button using jQuery Have you ever encountered a situation where you have a form with a disabled submit button and you want to enable it dynamically based on some condition? Well, you can easily achieve this using jQuery. Method 1: Using the prop() Method The prop(

js how to sort array by string length

Sorting an Array by String Length in JavaScript Sorting an array by string length is a common task in JavaScript development. The good news is that it can be accomplished with only a few lines of code. Method 1: Using the sort() method with a custom comparator function The easiest

Javascript Regex for non-negative numbers

Javascript Regex for non-negative numbers If you are working with user input in your Javascript code and you want to validate that the input is a non-negative number, you can use regular expressions or regex to do so. A regex is a pattern that specifies a set of strings to

animejs reduce the speed

How to Reduce the Speed of an Animation with Anime.js? If you are working with animations and looking to decrease the speed of your animation using Anime.js library, then you have landed on the right page. Here, we will discuss how to reduce the speed of your animation