Just using symbols such as []()! is enough to implement almost any Javascript code

Please test it under Firefox

Look at the example: js code alert("hi there") That’s it Equivalent to ([][(![] [])[! [] ! [] ! []] (!![] [][(![] []) [ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] (!![ ] [])[ ! []] (!![] [])[ []]][([][(![] [])[ []] ([![]] [][[]] )[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]] [])[! [] ! [] ! []] (![] [])[ ! []] (![] [])[! [] ! []] (![] [])[! [] ! []]]()[(![] [])[ ! []] (![] [])[ ! [] ! []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []] (!![] [])[ [] ]])([][(![] [])[! [] ! [] ! []] (!![] [][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [] )[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] (!![] [])[ ! []] ( !![] [])[ []]][([][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![ ] [])[ ! []]] [])[! [] ! [] ! []] (![] [])[ ! []] (![] [])[! [] ! [] ] (![] [])[! [] ! []]]()[(![] [])[ ! []] (!![] [])[ []] (!![] [ ][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] ([][(![] [])[! [] ! [] ! []] (!![] [][(![] [])[ []] ([![ ]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] (!![] [])[ ! [] ] (!![] [])[ []]][([][(![] [])[ []] ([![]] [][[]])[ ! [] [ [] ]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (! ![] [])[ ! []]] [])[! [] ! [] ! []] (![] [])[ ! []] (![] [])[! [] ! []] (![] [])[! [] ! []]]() [])[! [] ! []]]((![] [])[ ! []] ( [![ ]] [])[ []])[ []] ([![]] [][[]])[ ! [] [ []]] ( [![]] [][(![] [ ])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [] )[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ ! []]] ( !![] [])[ []] [][(![] [])[! [] ! [] ! []] (!![] [][(![] [])[ [] ] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] (!![] [] )[ ! []] (!![] [])[ []]][([][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]] [])[! [] ! [] ! []] (![] [])[ ! []] (![] []) [! [] ! []] (![] [])[! [] ! []]]()[(![] [])[ ! []] (!![] [])[ [] ] (!![] [][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[ ! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! [] ]])[ ! [] [ []]] ([][(![] [])[! [] ! [] ! []] (!![] [][(![] [])[ []] ([![]] [][[]])[ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ [ ]] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []]])[ ! [] [ []]] (!![] [])[ ! []] (!![] [])[ []]][([][(![] [])[ []] ([![]] [][[]]) [ ! [] [ []]] (![] [])[! [] ! []] (!![] [])[ []] (!![] [])[! [] ! [ ] ! []] (!![] [])[ ! []]] [])[! [] ! [] ! []] (![] [])[ ! []] (![] [ ])[! [] ! []] (![] [])[! [] ! []]]() [])[! [] ! []]]((![] [])[ ! []] ( [![]] [])[ []])[ []] (!![] [])[! [] ! [] ! []] (!![] [])[ ! []] (!![] [])[! [] ! [] ! []])

The principle of its implementation, there is a code table

Copy code The code is as follows: (NaN []["filter"])[11]', ! window["atob"]("If")[0]', " ("").fontcolor()[12]', # window["atob"]("0iN")[1 ]', $ window["atob"]("0iT")[1]', % window["atob"]("0iW")[1]', & window[" atob"]("0ia")[1]', ' window["atob"]("0if")[1]', ( (false []["filter"])[20] ', ) (false []["filter"])[21]', * window["atob"]("0ir")[1]', window["atob"] ("0it")[1]', , window["atob"]("0iy")[1]', - (NaN window["Date"]())[31]', .window["atob"]("1i4")[1]', / (true ("")["sub"]())[10]', 0-9 ignored */ ,,,,,,,,, : window["Date"]()[21]', ; window["atob"]("O0")[0]', = ("").fontcolor()[11]', > ("")["sub" ]()[10]', ? window["atob"]("0j9")[1]', @ window["atob"]("00A")[1]', A ( [] []["constructor"])[10]', B ( [] (false)["constructor"])[10]', C window["atob"]( "00N")[1]', D window["btoa"](00)[1]', E window["btoa"](01)[2]', F ( 0 []["filter"]["constructor"])[10]', G window["btoa"]("0f")[1]', H window["btoa"]( "0t")[1]', I ("Infinity")[0]', J window["atob"]("00r")[1]', K window[" btoa"](")(")[0]', L window["btoa"]("/")[0]', M window["btoa"](0)[0]' , N ("NaN")[0]', O window["btoa"](8)[0]', P window["btoa"](" Q window["btoa"]("a")[1]', R window["atob"]("01I")[1]', S window[ "btoa"]("I")[0]', T window["btoa"]("N")[0]', U window["atob"]("01W")[ 1]', V window["atob"]("01a")[1]', W (true window)[12]', X window["atob"]("01i ")[1]', Y window["btoa"]("a")[0]', Z window["btoa"]("f")[0]', [ (undefined []["filter"])[33]', window["atob"]("01y")[1]', ] (true []["filter"])[ 40]', ^ window["roof"](014)[1]', _ window["roof"](018)[1]', ` window["roof"] ("02A")[1]', a ("false")[1]', b (window [])[2]', c ([]["filter"] [])[3]', d ("undefined")[2]', e ("true")[3]', f ("false")[0]', g ([] ("")["constructor"])[14]', h window["atob"]("aN")[0]', i ([false] undefined)[10]', j (window [])[3]', k window["atob"]("a0")[0]', l ("false") [2]', m (Number [])[11]', n ("undefined")[1]', o (true []["filter"])[10] ', p window["atob"]("cN")[0]', q window["atob"]("cf")[0]', r ("true" )[1]', s ("false")[3]', t ("true")[0]', u ("undefined")[0]', v (0 []["filter"])[30]', w ([]["sort"]["call"]() [])[13]', x window[ "atob"]("eN")[0]', y (NaN [Infinity])[10]', z window["atob"]("et")[0]', { (NaN []["filter"])[21]', | window["atob"]("03y")[1]', } (NaN []["filter"])[41]', ~ window["atob"](234)[1 ]' ["eval"] 任何 []["sort"]["call"]() 优教 [].sort.call()，等了于 window，今京上海[]["sort"]["call "]()["eval"] 就等了于 window.eval。 了是最体体力活了，把码表电影电影成 eval("blah blah") 就等了于 window.eval。 了是是体力活了，把码表可以电影成 eval("blah blah") > 歌詞电影的码表是以。 Chrome和Firefox的index就就设计。 可以设计码表设计·toLocal*()` 歌詞族手机到Unicode，比fromCharCode要简短 原文:

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Just using symbols such as []()! is enough to implement almost any Javascript code_javascript tips