a64160Xf000000000000000 b64160x7FFFFFFFFFFFFFFF a-b10 : C 1 -(2^62+2^61+2^60+1) 2^62+2^61+2^60+1 2^59+ (2^55+2^54+…+2^2+2^1+2^0) : B C D E F input ul hr li div form : B flashhttp iframedocument.domain m.toutiaoajaxtoutiao jsonppost http : A C color background-color font- size border margin push 3,7,2,4,1,5,8 A.O(n) B.O(n) , A.O(n) pushpush C.O(logn) D.O(n), : D A B C D httpgetpost : A B getpost getpostheaderbody getContent-typetext/html getpost JavaScripttypeof : A C F G symbol NaN boolean null array undefined string postpost post post type post text/html typeoftypeof : A 13/27 7/9 1/2 1/3 : A B visibility:hidden; display:none; visibility:hidden;display:none; visibility:hidden;reflowrepaint TCP : C FIN FIN,PSH ACK FIN,ACK button idbutton1js : B D document.getElementById(“button1”).setAttribute (“Readolny”,true); document.getElementById(“button1”).setAttribute(“disabled”,”tru e”); document.getElementById (“button1”).Readolny=true; document.getElementById(“button1”).disabled=true; CSSID : D ID>Class>= ID>>Class> ID>Class>> ID>Class=> button idbutton id : B D document.getElementById(“button1” ).setAttribute(“Readolny”,true); document.getElementById(“button1”).setAttribute(“disabled”,”tru button1button1 document.getElementById (“button1”).setAttribute(“Readolny”,true); document.getElementById(“button1”).setAttribute(“disabled”,”tru document.getElementById(“button1” ).Readolny=true; js document.getElementById(“button1”).setAttribute(“Readolny”,true); document.getElementById(“button1”).setAttribute (“disabled”,”tru document.getElementById(“button1”).Readolny=true; document.getElementById(“button1”).disabled=true; IDID。。。。。。以下内容 略