JavaScript design mode Stoyan stefanov-reading notes

Introduction to the first chapter

One or three types of modes

design mode, encoding mode, anti-pattern

Ii. Basic JavaScript concepts

1. Object-oriented

Five basic types: number, String, Boolean, undefine, null

Functions are objects as well as properties and methods

There are two types of objects: 1, native ECMAScript 2, host, defined in the host environment, such as a browser

Native includes: Built-in objects and user-defined objects

Host includes: Window object and all DOM objects

2. Prototypes

The prototype is an object, and each automatically gets a prototypes property that points to a new, empty object

　　

3, JSLint

JavaScript is a parsing language without static compile-time checks, JSLint is a tool to check the quality of JavaScript code

JavaScript design mode Stoyan stefanov-reading notes