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Trident Gecko Webkit Presto console log document write src // /**/

var undefined , class int float GET SET const

number string boolean null undefined Object Function Number String Boolean Date Error ture false charCodeAt() \u \u4e00 \u9fa5 \n \r \t \ \’ \”

typeof() string number Boolean object function undefined toString() parseInt() parseFloat() Number()

typeof instanceof void delete isNaN()

Function Method Procedure function return var decodeURI() decodeURIComponent() encodeURI() encodeURIComponent()　eval()　isFInite() isNaN() pareFloat() parstInt()

if else true false

switch case default break

while break do

for break continue