The Basics of JavaScript

JavaScript, also known as JS, is one of the most widely used languages on the web. HTML and CSS are the foundations of the World Wide Web. Over 97% of websites use JavaScript on the client side to run their pages. Third-party libraries and scripting languages are commonly used along with JavaScript to extend its capabilities and speed. Read on to learn more about this language and how it works. This article explains the basics of JavaScript.


JavaScript is a first-class object that may have properties and methods. Functions may be nested. A nested function is defined within another function. When the outer function is called, the inner function object is created. These forms are lexically closed, with the lexical scope of the outer class becoming part of the inner function’s internal state. There are several other features of JavaScript that can make your life easier when you need to use them.

In addition to the basic syntax, JavaScript also has several useful features. For example, a function may have properties and methods. It can be a first-class object. A nested function is a first-class object, which means it can have properties and methods. When a nested function is invoked, a nested function is created. This creates a lexical closure, where the lexical scope of the outer function becomes part of the inner function’s internal state. Furthermore, JavaScript supports anonymous functions and implicit delegation, which allows developers to delegate code to another developer.

Besides the first-class object, JavaScript also supports anonymous functions. You can access an anonymous function or an object that holds the local argument of a function. There are some other useful features of JavaScript, which are not available in any other programming language. A library that sells books is a great place to start learning this language. There are many online resources for learning JavaScript, including online books. If you are unfamiliar with this language, check out some of these books.

The first-class object in JavaScript is a function. It is a type of object that has a number of methods and properties. A nested function is defined inside another function. When the outer function is invoked, it creates a nested version of itself. The outer function forms a lexical closure. This form of a nested function is a lexical closure. When invoked, the inner function gains the inner object’s lexical scope.

The second class of objects in JavaScript is the id-number property. This property allows functions to store data. In other words, a nested object can store any type of data. A nested object is an instance of a class. A nested structure can contain multiple levels of code. For example, a single-level element can be a button. The second class is the id-number of the function.