var gbbeforex =-1:录上一次的x位置var gbbeforey =-l:记录上一次的y位置var mycanvas =document . getelementbyid (my Canvasvar mytext =document getelementbyid ( myinfovar my Width - document getelementbyid ('my Width ")var mycolor = document getelementbyid (my Color ")var myname =document getelementbvld ("myname)war mynames =document. getelementbyid (mynames")var should Draw = falseshowfilenameso :读取所有已经保存的文件的名称。function show Filenamesfor (var 1 =0: 1-localstorage length : 1-7 ){war mykey =locaistorage key (1)war myitem =new Option (myker, myke)mynames options . add (myitem):以下设置画布背景色为白色ar ctx = canvas . getcontext ( 2d):txfillstvle = "=finit".ctx fillrect (0. 0 , m'canvas . width . canvas . height}

function startdrawo fshoulddraw = truemytext value = " AABfunction stopdrawo ftoulddrawv =gbbeforex = -1gbbeforey = -1mytext value = " RE "function Drawing fif ( shoulddraw = e false ) returvar cure = event client : 993-sabftgx4a5var cury = event client : / / iga yatigbbeforex = curxgbbeforey - curymytext value = " [ X Y ] = [ + curx + " : " + cury + " "war ctx-mycanvas getcontext ( 2d " )ctx . beginpathoctx strokestyle = micolor waluectx line Width = parseint ( tmy Width value )

ctx . move To ( crx currmctx lineto ( gbbefore X , gbbefore Y )ctx stroke :bbeforex = curdgbbefore Y = cury :E function mysaveo fvar strfilename = myname value ,if ( strfilename length = = 0 ) returnvar content = mycanvas , todataurl ( imazlocal Storage . setter ( strfilename , myconten / peg ) ,igevar myitem = new Option ( strfilename , strfilename )ynames options . add ( myitem )alert ( h . / ( s " )tunction my fwar strfilename = mynames value .var mycontent = localstorage getitem ( strfilename )var myimg = new Image ;twig . src = contentw'ar ctx = mycanvas getcontext ( 2d ) .ctx drawimage ( myimg . 0 , 0 )

厉害了hhhh