Course Introduction

Introduction to ECMAScript related terms

let variable declaration and declaration attributes

let classic case practice

const declaration constants and characteristics

Destructuring assignment of variables

template string

Simplified writing of objects

Arrow functions and declaration features

Arrow function practice and application scenarios

Default value settings for function parameters

rest parameters

Introduction to spread operators

Application of spread operator

Introduction and creation of Symbol

Object adds a Symbol type attribute

Symbol’s built-in properties

Introduction to iterators

Iterator application-customized traversal of data

Generator function declaration and call

Passing arguments to generator functions

Generator function instance

Generator function example-2

Introduction and basic use of Promise

Promise encapsulates reading files

Promise encapsulates AJAX requests

Promise.prototype..then method

Promise practice exercise-reading multiple file contents

Promise object catch method

Collection introduction and API

collective practice

Map introduction and API

Class introduction and first experience

class static members

ES5 constructor inheritance

class inheritance

Overriding of parent class methods by subclasses

Getter and setter settings in class

Numeric extensions for ES6

ES6 object method extension

Modular introduction, advantages and products

Browsers use ES6 modularity to introduce modules

Summary of ES6 module exposed data syntax

Summary of module data syntax introduced in ES6

Browser uses ES6 modularization method 2

Babel converts ES6 modular code

ES6 modularity introduces NPM packages

ES7 new features

async function

await expression

Combining async and await to read file content

Combining async and await to send AJAX requests

ES8 object method extension

ES9 spread operator and rest parameters

ES9 regular extension-named capture grouping

ES9 regular extension-reverse assertion

ES9 regular extension-dotAll mode

Object extension method Object.fromEntries

String method extensions-trimStart-trimEnd

Array method extension-flat and flatMap

Symbol.prototype.description

private properties

Promise.allSettled method

String.prototype.matchAll method

optional chaining operator

dynamic import

BigInt type

Absolute global object globalThis