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When it comes to web development, JavaScript has long been the go-to language. However, TypeScript, a superset of JavaScript, has been gaining popularity. Let’s dive into a comparison of TypeScript and JavaScript, focusing on performance and other factors. Performance In terms of raw performance, TypeScript and JavaScript are on equal footing. TypeScript is a compiled language, which means it is translated into JavaScript before being run in the browser. This compilation step doesn’t inherently make TypeScript faster or slower than JavaScript. In essence, the performance of your code will depend more on how it’s written rather than whether it’s TypeScript or JavaScript. Scalability TypeScript shines when it comes to building large-scale applications. It was designed to make it easier to manage and navigate large codebases. For example, TypeScript’s static typing allows you to catch errors at compile-time, rather than runtime. This can be a lifesaver when you’re refactoring code and wan

In JavaScript, the this keyword behaves a bit differently compared to other programming languages. It refers to an object, but the object it refers to depends on the context in which this is used, or where it is invoked. Understanding ‘this’ in Different Contexts In an object method : When this is used inside an object method, it refers to the object itself. For example: let car = { brand : "Toyota" , getBrand : function ( ) { return this . brand ; } }; console . log (car. getBrand ()); // Outputs: "Toyota" In the above example, this inside the getBrand method refers to the car object. Alone : When used alone, this refers to the global object. In a browser, the global object is the window object. In a function : Inside a function, this also refers to the global object. However, this behavior changes if we’re in strict mode. In a function, in strict mode : If ‘strict mode’ is enabled in a function, this is undefined . This is because strict mod

JavaScript, a powerful and flexible programming language, provides a variety of built-in functions that are ready to be used. These functions, also known as methods, are properties containing function definitions. In simpler terms, when the data stored on an object is a function, we call it a method. Properties vs Methods To differentiate between properties and methods, we can think of it this way: A property is what an object has, while a method is what an object does. For example, a car (object) has properties like color and model, and methods like start and stop. The Role of Objects Since JavaScript methods are actions that can be performed on objects, we first need to have objects to start with. JavaScript provides several built-in objects like String , Number , Array , Date , and more. Each of these objects comes with its own set of methods. For instance, the String object has methods like charAt() , concat() , indexOf() , etc. Similarly, the Array object has methods like push()

JavaScript, a cornerstone of modern web development, offers a variety of iterators that can greatly simplify the process of working with collections of data. Here are 10 essential JavaScript iterators you should know: 1. Array.prototype.forEach() The forEach() method executes a provided function once for each array element. let array = [ 1 , 2 , 3 ]; array. forEach ( item => console . log (item)); // logs 1, then 2, then 3 2. Array.prototype.map() The map() method creates a new array populated with the results of calling a provided function on every element in the calling array. let array = [ 1 , 2 , 3 ]; let newArray = array. map ( item => item * 2 ); // newArray is [2, 4, 6] 3. Array.prototype.filter() The filter() method creates a new array with all elements that pass the test implemented by the provided function. let array = [ 1 , 2 , 3 , 4 ]; let newArray = array. filter ( item => item % 2 === 0 ); // newArray is [2, 4] 4. Array.prototype.reduce() The re

JavaScript is a powerful and flexible language that provides developers with a wide range of built-in functions. In this article, we will explore ten essential JavaScript Object functions, complete with example code snippets and descriptions. Explore 10 essential JavaScript Object functions in our latest blog post. From extracting keys with  Object.keys()  to creating objects with  Object.fromEntries() , we provide code snippets and descriptions for each function. Enhance your JavaScript skills and understanding with our detailed guide. 1. Extracting Keys with Object.keys() The Object.keys() method returns an array of a given object’s own property names. Here’s an example: const person = { name : 'John' , age : 30 , job : 'Developer' }; const keys = Object . keys (person); // Result: keys = ['name', 'age', 'job'] 2. Extracting Values with Object.values() The Object.values() method returns an array of a given object’s own enumerable property

Understanding Expressions and Operators in Programming In the realm of programming, the terms ‘expressions’ and ‘operators’ are frequently used. But what do they mean? Let’s delve into these concepts to gain a better understanding. What is an Expression? An expression, at its core, is a valid unit of code that resolves to a value. It’s like a mathematical equation that computes a result. For instance, in the equation 5 + 3 , 5 + 3 is an expression that resolves to 8 . Expressions in programming come in two types: Expressions with side effects : These expressions do something more than just compute a value. They might change the state of the program in some way. For example, the expression x = 7 assigns the value 7 to the variable x . This expression has a side effect (assigning a value to x ) and also evaluates to 7 . Purely evaluative expressions : These expressions simply compute a value and do nothing else. For example, the expression 3 + 4 adds 3 and 4 together to produce 7 .

Loops, a fundamental concept in programming, offer a quick and efficient way to perform repetitive tasks. They can be thought of as the computerized version of a game where you instruct someone to take a certain number of steps in one direction, and then another number of steps in a different direction. Consider the game instruction, “Go five steps to the east”. This could be expressed as a loop in a programming language like JavaScript: for ( let i = 0 ; i < 5 ; i++) { console . log ( "Take a step to the east" ); } In this code snippet, the for loop instructs the computer to print the statement “Take a step to the east” five times, which represents the five steps in the game instruction. The Power of Loops Loops are incredibly powerful because they reduce the amount of code we need to write and make our code more readable. Without loops, if we wanted to print a statement five times, we would have to write the same line of code five times. With a loop, we only need t