Merge pull request #718 from Chalarangelo/glossary-additions

[GLOSSARY] Glossary additions

glossary/Argument.md

@@ -0,0 +1,4 @@
+### Argument
+
+An argument is a value passed as an input to a function and can be either a primitive or an object.
+In JavaScript, functions can also be passed as arguments to other functions.

glossary/Constant.md

@@ -0,0 +1,4 @@
+### Constant
+
+A constant is a value, associated with an identifier.
+The value of a constant can be accessed using the identifier and cannot be altered during execution.

glossary/ES6.md

@@ -0,0 +1,4 @@
+### ES6
+
+ES6 stands for ECMAScript 6 (also known as ECMAScript 2015), a version of the ECMAScript specification that standardizes JavaScript.
+ES6 adds a wide variety of new features to the specification, such as classes, promises, generators and arrow functions.

glossary/Express.md

@@ -0,0 +1,4 @@
+### Express
+
+Express is a backend framework, that provides a layer of fundamental web application features for Node.js.
+Some of its key features are routing, middleware, template engines and error handling.

glossary/Function.md

@@ -0,0 +1,5 @@
+### Function
+
+Functions are self-contained blocks of code with their own scope, that can be called by other code and are usually associated with a unique identifier.
+Functions accept input in the form of arguments and can optionally return an output (if no `return` statement is present, the default value of `undefined` will be returned instead). 
+JavaScript functions are also objects.

glossary/Git.md

@@ -0,0 +1,4 @@
+### Git
+
+Git is an open-source version control system, used for source code management.
+Git allows users to copy (clone) and edit code on their local machines, before merging it into the main code base (master repository).

glossary/HTML.md

@@ -0,0 +1,4 @@
+### HTML
+
+HTML stands for HyperText Markup Language and is a language used to structure web pages.
+HTML documents are plaintext documents structured with elements, which are surrounded by `<>` tags and optionally extended with attributes.

glossary/IP.md

@@ -0,0 +1,4 @@
+### IP
+
+An IP address is a number assigned to a device connected to a network that uses the Internet protocol.
+Two IP versions are currently in use - IPv4, the older version of the communication protocol (e.g. 192.168.1.100) and IPv6, the newest version of the communication protocol which allows for many different IP addresses (e.g. 0:0:0:0:ffff:c0a8:164).

glossary/Npm.md

@@ -0,0 +1,4 @@
+### Npm
+
+Npm is a package manager for the JavaScript programming language and the default package manager for Node.js.
+It consists of a command-line client and the npm registry, an online database of packages.

glossary/React.md

@@ -0,0 +1,4 @@
+### React
+
+React is a frontend framework, that allows developers to create dynamic, component-based user interfaces.
+React separates view and state, utilizing a virtual DOM to update the user interface.

glossary/Repository.md

@@ -0,0 +1,3 @@
+### Repository
+
+In a version control system, a repository (or repo for short) is a data structure that stores metadata for a set of files (i.e. a project).

glossary/Variable.md

@@ -0,0 +1,4 @@
+### Variable
+
+A variable is a storage location, associated with an identifier and containing a value.
+The value of a variable can be referred using the identifier and can be altered during execution.

glossary/Yarn.md

@@ -0,0 +1,4 @@
+### Yarn
+
+Yarn is a package manager made by Facebook. 
+It can be used as an alternative to the npm package manager and is compatible with the public NPM registry.