bosskey59/021020-ES6-Deep-Dive

What is ES6?

Javascript spec of 2015

let & const vars

var -> not suggested , does functional scoping, hoisted, can be redifined let -> block scoping, can't be rededclared, can be reassigned, not hoisted const -> block scoping, can't be rededclared, can't be reassigned, not hoisted global -> rarely use this

this

1. function invocation
   • EX: someFunc() - > this will be the window or global object
2. method invoation
   • EX : someObj.method -> this will be the thing to the left of the method
3. bind/call/apply
   • EX : loook at index.js
4. constructor invocation
   • new Whatever -> this will be the new instance being created! and also what it's returning

arrow functions

template strings

destructuring (Objects and Arrays)

For of, for in

default, rest, spread operator