The following language features are not covered:

Operators:

>>>=
^=
%=
in
prefix --
>>=
delete
void
instanceof


statements:

with
switch


core language feaures:

getters / setters
closure data access
heavy use of first-class functions

Builtins:

String.search

Number.toFixed
Number.toExponential
Number.toPrecision

RegExp.exec
RegExp custom properties

Function.apply
Function.call

parseInt
parseFloat
escape
unescape
decodeURI
encodeURI


Date.toDateString
Date.toTimeString
Date.getUTCFullYear
Date.getUTCMonth
Date.getUTCDate
Date.getUTCDay
Date.getUTCSeconds
Date.getMilliseconds
Date.getUTCMilliseconds
Date.set*


Math.E
Math.LN2
Math.LN10
Math.LOG2E
Math.LOG10E
Math.SQRT1_2
Math.SQRT2
Math.acos
Math.asin
Math.atan
Math.atan2
Math.exp
Math.min
Math.tan

Object.hasOwnProperty
Object.propertyIsEnumerable
Object.isPrototypeOf


Array.concat
Array.join
Array.pop 
Array.push
Array.reverse
Array.shift
Array.slice
Array.sort
Array.splice
Array.unshift
Array.every
Array.forEach
Array.some
Array.indexOf
Array.lastIndexOf
Array.filter
Array.map