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What is the event loop in node.js, As you might aware that Node.js is not scripting or programming language. It is an asynchronous event-driven JavaScript runtime. Node.js architecture design is almost similar to like Ruby's Event Machine or Python's Twisted. Nodejs starts executing the by entering into event loop…
Node js introduction and its features Node js introduction and its features, Node.js is a cross-platform run time environment. And it can execute javascript code in it. And Node.js platform runs on a V8 engine that is built by Google. Node js is specially developed for building very high-end scalable…
For better understanding what is the difference between var and let in javascript, let us understand the scope concept in JavaScript. Basically JavaScript has a different scope like Global Scope: The variable declared globally and the same variable is available for access throughout your code. Function Scope: The variable…
What is an object in Javascript Before creating an object in javascript, let's understand what is an object in javascript and its behavior JavaScript has an object entity with a combination of properties. An object has the key-value pair. Every element has the name which is called key Objects help…
What is javascript Javascript is a lightweight, cross-platform and object-oriented computer programming language. Lightweight: The Javascript uses very little memory of the computer. And Javascript has a very simple syntax. Cross-platform: Javascript can be used on multiple platforms and systems. Object-oriented: Javascript is a language that's based on objects. Everything…
Difference between undefined and null in javascript In this article, we will study what is the difference between undefined and null in javascript with examples, let's look at the definition of What is undefined in Javascript? In javascript undefined is also treated as a primitive value. That means it is…
What is apply in Javascript and when to use The apply method allows passing the value of this and it accepts 2 parameters. First parameter: The value which should be bound to this Second parameter: An array with parameters Let's write an example to see how apply method can be…
What is call in Javascript and when to use The call method in javascript helps you to call a function with a given this value. And the call method is almost similar to the application method. The major difference is that the call method can receive an argument list and…
What is bind in javascript and when to use Let's take a quick overview of the below points in order to learn what is bind Javascript has a scope and scope creates a context for functions. For example, If you create a variable inside the function then that variable can…
A constructor is a special member function a class which automatically initializes the properties and objects of the classes. A constructor is called automatically whenever you create an object of a class. And a constructor is used to set the default values for the members of an object. What…