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Having a developer blog can be incredibly beneficial for a number of reasons. In this post, we will explore why every developer should have a blog and how to maintain it consistently. Blogging as a Source of Leads and Revenue: Your blog can serve as a platform to attract potential leads and even become a source of revenue. If you aspire to be an independent developer, your blog can be the place where you sell your products or services....

In the world of React, immutability is a significant concept that plays a crucial role in the development process. Whether you agree with it or not, React and its ecosystem strongly encourage the use of immutability. It is essential to understand why immutability is so important and the implications it has. In programming, immutability refers to a variable whose value cannot be changed once it is created. You might not realize it, but you are already using immutable variables when working with strings....

Your blog is not just a website, it’s your operational center, your headquarters. It’s the place where you build your future and connect with your audience. While social media platforms and other forms of online presence are important tools, they should ultimately lead back to your own site. When it comes to building your website, the technology you choose doesn’t matter as much as having complete ownership and control over your platform....

When working with the DOM, it is important to understand the concept of timing. One crucial detail that may not be immediately apparent is that when you access the value of a DOM element and store it into a variable, that variable will not be updated with the new value if the DOM element changes. Let’s say you have an input field in a form <input id="temperature">, and you want to get its value....

In JavaScript, the isExtensible() method is used to determine if new properties can be added to an object. This method checks the extensibility of an object, which means if it can be modified to add new properties or not. By default, any object in JavaScript is extensible unless it has been used as an argument to certain methods like Object.freeze(), Object.seal(), or Object.preventExtensions(). These methods restrict the modification capabilities of an object....

Learn all about the Number object’s isInteger() method in JavaScript. The isInteger() method determines whether a given value is an integer. It returns true if the value is an integer and false for any other data type, including booleans, strings, objects, and arrays. Here are some examples: Number.isInteger(1); // true Number.isInteger(-237); // true Number.isInteger(0); // true Number.isInteger(0.2); // false Number.isInteger('Flavio'); // false Number.isInteger(true); // false Number.isInteger({}); // false Number.isInteger([1, 2, 3]); // false By using the isInteger() method, you can easily check whether a value is an integer or not in your JavaScript code....

In JavaScript, the Number.isSafeInteger() method is used to determine if a given number is a “safe integer” or not. A safe integer is defined as one that can be exactly represented as an integer, without any loss of precision. While a number may satisfy the Number.isInteger() method, it may not necessarily be considered a safe integer if it exceeds the boundaries of safe integers. The boundaries of safe integers in JavaScript are defined as anything greater than 2^53 or less than -2^53....

Learn all about the isSealed() method of the Object object in JavaScript. The isSealed() method accepts an object as an argument and returns true if the object is sealed, and false otherwise. An object is considered sealed when it is a return value of the Object.seal() function. Here’s an example illustrating the usage of isSealed(): const dog = {} dog.breed = 'Siberian Husky' const myDog = Object.seal(dog) Object.isSealed(dog) // true Object....

The JavaScript in operator is a powerful tool that allows us to check if an object has a specific property. By using this operator, we can determine whether a property exists within an object, or if it is present in its prototype chain. When the in operator is used, it returns true if the first operand is a property of the object on the right side. It also returns true if the property is found in any of the object’s ancestors in its prototype chain....

Learn more about the seal() method in JavaScript, which is used to restrict the modification of an object’s properties. The seal() method, when called on an object, returns the same object. The object passed as an argument is mutated and becomes immutable. This means that new properties cannot be added to it, existing properties cannot be removed, but they can still be modified. Here’s an example to demonstrate it: const dog = {} dog....