Category Archive for "Javascript"

Most Efficient Method to GroupBy on an Array of Objects

When working with arrays of objects in JavaScript, there may be a need to group the objects based on certain properties and perform calculations on the grouped data. This can be ac...

Do DOM tree elements with IDs become global properties?

Working on an idea for a simple HTMLElement wrapper I stumbled upon the following for Internet Explorer and Chrome: For a given HTMLElement with an id in the DOM tree, it is possi...

Why is using the JavaScript eval function a bad idea?

When it comes to JavaScript development, the eval function can be a tempting solution. It allows you to execute code dynamically, making it a powerful tool. However,...

How to Merge Properties of Two JavaScript Objects Dynamically

JavaScript provides several ways to merge properties of two objects dynamically. Whether you need to merge simple objects or complex ones, there are built-in methods...

How to Detect a Click Outside an Element in JavaScript and jQuery

As a web developer, you may come across scenarios where you need to detect when a user clicks outside of a specific element. This can be useful for various purposes, such as hiding...

How to Modify the URL Without Reloading the Page

Have you ever wondered how to modify the URL of the current page without having to reload it? Maybe you want to dynamically update the URL to reflect changes in the content or to p...

What is the difference between JSON and Object Literal Notation?

When working with JavaScript, you may come across two different ways to define objects: JSON and object literal notation. While they may seem similar, there are some key difference...

How to Remove a Specific Item from an Array in JavaScript

Arrays are one of the fundamental data structures in JavaScript, and being able to remove a specific item from an array is a common task when working with JavaScript code. In this...

Understanding the Purpose of the Var Keyword in JavaScript

In JavaScript, the var keyword is used to declare variables. It is used to define a variable and assign a value to it within the function scope or global scope, depending on where...

How to store objects in HTML5 localStorage/sessionStorage

HTML5 localStorage and sessionStorage are powerful web storage features that allow web developers to store data on the client's browser. However, when it comes to storing JavaScrip...