Answer 1

"use strict"

String[number] access

Multiline strings

String.trim()

Array.isArray()

Array forEach()

Array map()

Array filter()

Array reduce()

Array reduceRight()

Array every()

Array some()

Array indexOf()

Array lastIndexOf()

JSON.parse()

JSON.stringify()

Date.now()

Date toISOString()

Date toJSON()

Property getters and setters

Reserved words as property names

Object methods

Object defineProperty()

Function.bind()

Trailing commas