Javascript for Interviews Cheat Sheet (DRAFT) by shimona47

a1.pus­h(obj)	Add obj to end of array a1, return length
a1.pop()	Remove and return last
a1.rev­erse()
a1.sli­ce(­start, end)
a1.for­Eac­h(fn)
a1.con­cat(a2)
a1.eve­ry(fn => bool)
a1.some(fn => bool)
a1.sort() / a1.toS­orted()	Sort in place / non destru­ctive
a1.unshift	Add to start of array
Array.i­sA­rra­y(var)	Return true if var is array

Object.en­tri­es(obj)	Return array of objects [k, v] pairs
Object.fr­omE­ntr­ies(a1)	Create object from [k, v] pairs
Object.is­(va­lue1, value2)	True if same instance (not deep)