JavaScript knowledge System

JavaScript knowledge Map	Language	ECMAScript
	Browser	Bom
		Dom
		Other
	Transmition	Ajax, JSON
	Server-side	Node

javascript Vertical ecology	Application layer	Span style= "FONT-SIZE:16PX;" > interactive logic
	component layer	custom components
		generic components such as DatePicker
	Span style= "FONT-SIZE:16PX;" > frame layer	jquery, Angular, React ...
	core layer

Sort by: What is a programming language? A programming language is a command used to manipulate a computer's work. What is a computer capable of? The only thing a computer can do is work with data. So the most essential function of a programming language is to describe the data and define the rules of operation, as is the case with all program languages. So we look at a programming language, there are two basic starting points: data types and structures (for describing data) and grammar rules (for processing data).

Language
Data	Value, Type, and Variable		-javascript has 5 basic value types, which is number,string,boolean,null and Undefined. -variable is used to represent values. Being loosely typed, a variable is literally just a name for a particular value at a particular time.
	Data Structure	Array	An array was an ordered collection of values.
		Object	Formally,an object is a group of pairs of name and value. It has both kind of Properties:value property and function property.
Rules	Operator		Usage
			Priority
	Statement		Condition
			Loop
	Function		Basic opreation
			Recursion
			Variable Scope and Memory
			Closure
	Object		Basic operation
			Properties and Methods	Object, Array, Date, RegExp, Function; Number, String, Boolean; Math, Global
			Object Creation
			Inheritance
	Others		Syntax
			Type Conversion

Bom
Object	Window
	Location	History	Navigator	Screen
Execution	How does JavaScript work on client-side.
Security	Restrictions on JavaScript.
Client Detection	How to get information of the browser effectively.
Storage	How to store inormation on Client-side.

Dom
Object		Document
		Node	Element	Text	Form	Http	Event
Event	Event Type	Document	Mouse	Keyboard	Form	Drag	Touch
	Event Register
	Event Handler
	Event flow and Event delegation
HTML5 API		SVG, Canvas, Video, Audio ...

JavaScript knowledge System