What is ES6
ES6 learning refer to Ruan Yifeng's blog URL: http://jsrun.net/t/dZKKp
ECMAScript 6.0 (hereinafter referred to as ES6) is the next-generation standard of the JavaScript language, which was officially released in June 2015. Its goal is to make the JavaScript language can be used to write complex large-scale applications and become an enterprise-level development language.
The relationship between ECMAScript and JavaScript is that the former is the specification of the latter, and the latter is an implementation of the former (the other ECMAScript dialects include Jscript and ActionScript). In everyday situations, these two words are interchangeable
ES6 is not only a historical term, but also a general reference. It means the next-generation standard of JavaScript after version 5.1 , covering ES2015 , ES2016 , ES2017, etc., while ES2015 is the official name, specifically referring to the official version of the language released that year standard. ES6 generally refers to the ES2015 standard, but sometimes also refers to the "next-generation JavaScript language".
let and const commands
Deconstruction and assignment of variables
String expansion
Array expansion
Object extension
Function extension
Class increase
............ and so on