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