ES6 new Features

Variable--------------------------

Let,

Const: You must assign a value directly to a variable. Note that the properties or array members of an object can still be changed.

Const my_object = {Some: 1};

My_object. Some = ' body '; //Cool

Arrow function :=>

String------------------------

method : StartsWith (), EndsWith (), includes (), repeat ()

Template string :${... }

Array---------------------------

Array . from (): Creates an instance of an array from an array of classes and objects that can be traversed.

Array . of ():

Array1. Find ()

Array1. FindIndex ()

Array1. Fill ()

Math------------------------

math.sign Returns the sign of a number with a result of 1,-1, or 0

math.trunc returns numbers with no decimal digits

MATH.CBRT Returns the cube root of a number

Extension operator (...) ）------------------------

ES6 new Features