This chapter introduces JavaScript and discusses some of its fundamental concepts.

JavaScript is a multi-paradigm, dynamic language with types and operators, standard built-in objects, and methods. Its syntax is based on the Java and C languages — many structures from those languages apply to JavaScript as well. JavaScript supports object-oriented programming with object prototypes and classes. It also supports functional programming since functions are first-class objects that can be easily created via expressions and passed around like any other object.

Java web app tutorial showing how to build and deploy a Java web app to Azure with Visual Studio Code

View the reference for jsconfig.json.

Debug a .NET app running in a container, using Visual Studio Code.

The <feTurbulence> SVG filter primitive creates an image using the Perlin turbulence function. It allows the synthesis of artificial textures like clouds or marble. The resulting image will fill the entire filter primitive subregion.

Iterators and Generators bring the concept of iteration directly into the core language and provide a mechanism for customizing the behavior of for...of loops.

The <feMergeNode> SVG takes the result of another filter to be processed by its parent <feMerge>.

The Infinity global property is a numeric value representing infinity.

The undefined global property represents the primitive value undefined. It is one of JavaScript's primitive types.