Category: JavaScript

How to determine equality for two JavaScript objects? When working with JavaScript, you may come across situations where you need to compare two objects to check if they are equal. However, JavaScript does not provide a built-in method to directly compare objects for equality. In this blog post, we will explore different approaches to determine…

Regular expressions, or regex, are powerful tools for pattern matching in JavaScript. They allow you to search, validate, and manipulate strings based on specific patterns. In JavaScript, you can use the test() method of the RegExp object to check whether a string matches a regex. The test() method returns true if there is a match…

When working with JavaScript, there are often situations where we need to check if a string ends with a specific substring. This can be useful in various scenarios, such as validating input or manipulating data. In this blog post, we will explore different ways to achieve this using JavaScript. Using the endsWith() Method One of…

Sort JavaScript object by key When working with JavaScript objects, you may come across situations where you need to sort the object by its keys. Sorting an object by key can be useful in scenarios where you want to display the object’s properties in a specific order or perform operations based on the sorted keys.…

Uncaught SyntaxError: Cannot use import statement outside a module when importing ECMAScript 6 If you are a JavaScript developer working with ECMAScript 6 (ES6) modules, you might have encountered the error message “Uncaught SyntaxError: Cannot use import statement outside a module” at some point. This error occurs when you try to use the import statement…

When working with JavaScript, you may often come across situations where you need to create a two-dimensional array. A two-dimensional array is essentially an array of arrays, where each element in the main array is itself an array. This can be useful for storing and accessing data in a tabular format. There are multiple ways…

How to Deal with Floating Point Number Precision in JavaScript? When working with floating point numbers in JavaScript, it’s important to be aware of the potential precision issues that can arise. Due to the way floating point numbers are represented in binary, certain decimal numbers may not be represented accurately. This can lead to unexpected…

JavaScript window resize event As a tech professional working with JavaScript, you may come across the need to perform certain actions when the window is resized. Whether it’s adjusting the layout, updating content, or triggering animations, handling the window resize event is a common requirement in web development. In this blog post, we will explore…

How do I convert an existing callback API to promises? If you’ve been working with JavaScript for a while, you’re probably familiar with callback functions. Callbacks are commonly used in JavaScript to handle asynchronous operations. However, as your codebase grows, managing callbacks can become cumbersome and lead to callback hell. Thankfully, JavaScript introduced Promises, which…

When working with JavaScript, you may encounter situations where you need to output numbers with leading zeros. Whether you’re dealing with timestamps, formatting dates, or any other scenario where leading zeros are required, JavaScript provides several solutions to achieve this. In this article, we will explore three different approaches to output numbers with leading zeros…