ES6-ES11 new features

• Chapter1 Chapter One
• 1-1 Course Introduction
• 1-2 Introduction to ECMAScript related terms
• 1-3 let variable declaration and declaration attributes
• 1-4 let classic case practice
• 1-5 const declaration constants and characteristics
• 1-6 Destructuring assignment of variables
• 1-7 template string
• 1-8 Simplified writing of objects
• 1-9 Arrow functions and declaration features
• 1-10 Arrow function practice and application scenarios
• Chapter2 Chapter two
• 2-1 Default value settings for function parameters
• 2-2 rest parameters
• 2-3 Introduction to spread operators
• 2-4 Application of spread operator
• 2-5 Introduction and creation of Symbol
• 2-6 Object adds a Symbol type attribute
• 2-7 Symbol’s built-in properties
• 2-8 Introduction to iterators
• 2-9 Iterator application-customized traversal of data
• 2-10 Generator function declaration and call
• Chapter3 third chapter
• 3-1 Passing arguments to generator functions
• 3-2 Generator function instance
• 3-3 Generator function example-2
• 3-4 Introduction and basic use of Promise
• 3-5 Promise encapsulates reading files
• 3-6 Promise encapsulates AJAX requests
• 3-7 Promise.prototype..then method
• 3-8 Promise practice exercise-reading multiple file contents
• 3-9 Promise object catch method
• 3-10 Collection introduction and API
• Chapter4 Chapter Four
• 4-1 collective practice
• 4-2 Map introduction and API
• 4-3 Class introduction and first experience
• 4-4 class static members
• 4-5 ES5 constructor inheritance
• 4-6 class inheritance
• 4-7 Overriding of parent class methods by subclasses
• 4-8 Getter and setter settings in class
• 4-9 Numeric extensions for ES6
• 4-10 ES6 object method extension
• Chapter5 chapter Five
• 5-1 Modular introduction, advantages and products
• 5-2 Browsers use ES6 modularity to introduce modules
• 5-3 Summary of ES6 module exposed data syntax
• 5-4 Summary of module data syntax introduced in ES6
• 5-5 Browser uses ES6 modularization method 2
• 5-6 Babel converts ES6 modular code
• 5-7 ES6 modularity introduces NPM packages
• 5-8 ES7 new features
• 5-9 async function
• 5-10 await expression
• Chapter6 Chapter Six
• 6-1 Combining async and await to read file content
• 6-2 Combining async and await to send AJAX requests
• 6-3 ES8 object method extension
• 6-4 ES9 spread operator and rest parameters
• 6-5 ES9 regular extension-named capture grouping
• 6-6 ES9 regular extension-reverse assertion
• 6-7 ES9 regular extension-dotAll mode
• 6-8 Object extension method Object.fromEntries
• 6-9 String method extensions-trimStart-trimEnd
• 6-10 Array method extension-flat and flatMap
• Chapter7 Chapter VII
• 7-1 Symbol.prototype.description
• 7-2 private properties
• 7-3 Promise.allSettled method
• 7-4 String.prototype.matchAll method
• 7-5 optional chaining operator
• 7-6 dynamic import
• 7-7 BigInt type
• 7-8 Absolute global object globalThis