日期:2014-05-16  浏览次数:20468 次

关于JS的压缩与还原
有什么工具能把JS代码压缩成下面这样子?又有什么办法可以把压缩成下面这样的代码还原(还原大概的)

JScript code

eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--){d[e(c)]=k[c]||e(c)}k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--){if(k[c]){p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c])}}return p}('A 1b=1W;A 2a=0;A 2R=1;A 2Q=2;A 24=9;A 22=6;A 2S=1W;A 2V=2U;A Y;A V;A 1u=J;A 1K;A 1s,2P;A 1n;A 1k;A Z;A 1q;A P;A 1l;A X,1C;A U,1i;A 1w;A 1E;A 1X=E O(2O,2J,2I,2H,2K,2L,2M,2X,3e,3g,3a,2Z,2Y,2G,38,37,1Z);A 1I=E O(3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,2f,2i,2j,2m,2l,1p,2k,2c,2n,2F,2o,2z,0,0);A 1F=E O(0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,1p,1p);A 1J=E O(1,2,3,4,5,7,9,13,17,25,33,2D,2x,2w,2r,2q,1t,3h,2T,2A,2h,2g,2y,2E,36,2u,2v,2t,2s,2p);A 1L=E O(0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13);A 1G=E O(16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15);S 1O(){D.1N=J;D.1y=J}S 1M(){D.e=0;D.b=0;D.n=0;D.t=J}S 1o(b,n,s,d,e,1a){D.1f=16;D.1V=1z;D.R=0;D.1e=J;D.m=0;{A a;A c=E O(D.1f+1);A 1x;A f;A g;A h;A i;A j;A k;A W=E O(D.1f+1);A p;A Q;A q;A r=E 1M();A u=E O(D.1f);A v=E O(D.1V);A w;A x=E O(D.1f+1);A 1r;A y;A z;A o;A 1g;1g=D.1e=J;F(i=0;i<c.1h;i++)c[i]=0;F(i=0;i<W.1h;i++)W[i]=0;F(i=0;i<u.1h;i++)u[i]=J;F(i=0;i<v.1h;i++)v[i]=0;F(i=0;i<x.1h;i++)x[i]=0;1x=n>1D?b[1D]:D.1f;p=b;Q=0;i=n;1U{c[p[Q]]++;Q++}L(--i>0);B(c[0]==n){D.1e=J;D.m=0;D.R=0;C}F(j=1;j<=D.1f;j++)B(c[j]!=0)1c;k=j;B(1a<j)1a=j;F(i=D.1f;i!=0;i--)B(c[i]!=0)1c;g=i;B(1a>i)1a=i;F(y=1<<j;j<i;j++,y<<=1)B((y-=c[j])<0){D.R=2;D.m=1a;C}B((y-=c[i])<0){D.R=2;D.m=1a;C}c[i]+=y;x[1]=j=0;p=c;Q=1;1r=2;L(--i>0)x[1r++]=(j+=p[Q++]);p=b;Q=0;i=0;1U{B((j=p[Q++])!=0)v[x[j]++]=i}L(++i<n);n=x[g];x[0]=i=0;p=v;Q=0;h=-1;w=W[0]=0;q=J;z=0;F(;k<=g;k++){a=c[k];L(a-->0){L(k>w+W[1+h]){w+=W[1+h];h++;z=(z=g-w)>1a?1a:z;B((f=1<<(j=k-w))>a+1){f-=a+1;1r=k;L(++j<z){B((f<<=1)<=c[++1r])1c;f-=c[1r]}}B(w+j>1x&&w<1x)j=1x-w;z=1<<j;W[1+h]=j;q=E O(z);F(o=0;o<z;o++){q[o]=E 1M()}B(1g==J)1g=D.1e=E 1O();1d 1g=1g.1N=E 1O();1g.1N=J;1g.1y=q;u[h]=q;B(h>0){x[h]=i;r.b=W[h];r.e=16+j;r.t=q;j=(i&((1<<w)-1))>>(w-W[h]);u[h-1][j].e=r.e;u[h-1][j].b=r.b;u[h-1][j].n=r.n;u[h-1][j].t=r.t}}r.b=k-w;B(Q>=n)r.e=1p;1d B(p[Q]<s){r.e=(p[Q]<1D?16:15);r.n=p[Q++]}1d{r.e=e[p[Q]-s];r.n=d[p[Q++]-s]}f=1<<(k-w);F(j=i>>w;j<z;j+=f){q[j].e=r.e;q[j].b=r.b;q[j].n=r.n;q[j].t=r.t}F(j=1<<(k-1);(i&j)!=0;j>>=1)i^=j;i^=j;L((i&((1<<w)-1))!=x[h]){w-=W[h];h--}}}D.m=W[1];D.R=((y!=0&&g!=1)?1:0)}}S 1Y(){B(1w.1h==1E)C-1;C 1w.32(1E++)&39}S K(n){L(1k<n){1n|=1Y()<<1k;1k+=8}}S M(n){C 1n&1X[n]}S H(n){1n>>=n;1k-=n}S 1v(I,N,G){A e;A t;A n;B(G==0)C 0;n=0;F(;;){K(U);t=X.1y[M(U)];e=t.e;L(e>16){B(e==1p)C-1;H(t.b);e-=16;K(e);t=t.t[M(e)];e=t.e}H(t.b);B(e==16){V&=1b-1;I[N+n++]=Y[V++]=t.n;B(n==G)C G;3f}B(e==15)1c;K(e);P=t.n+M(e);H(e);K(1i);t=1C.1y[M(1i)];e=t.e;L(e>16){B(e==1p)C-1;H(t.b);e-=16;K(e);t=t.t[M(e)];e=t.e}H(t.b);K(e);1l=V-t.n-M(e);H(e);L(P>0&&n<G){P--;1l&=1b-1;V&=1b-1;I[N+n++]=Y[V++]=Y[1l++]}B(n==G)C G}Z=-1;C n}S 26(I,N,G){A n;n=1k&7;H(n);K(16);n=M(16);H(16);K(16);B(n!=((~1n)&1Z))C-1;H(16);P=n;n=0;L(P>0&&n<G){P--;V&=1b-1;K(8);I[N+n++]=Y[V++]=M(8);H(8)}B(P==0)Z=-1;C n}S 29(I,N,G){B(1u==J){A i;A l=E O(1z);A h;F(i=0;i<3b;i++)l[i]=8;F(;i<1D;i++)l[i]=9;F(;i<2W;i++)l[i]=7;F(;i<1z;i++)l[i]=8;1s=7;h=E 1o(l,1z,1t,1I,1F,1s);B(h.R!=0){1R("1S 1T: "+h.R);C-1}1u=h.1e;1s=h.m;F(i=0;i<30;i++)l[i]=5;1B=5;h=E 1o(l,30,0,1J,1L,1B);B(h.R>1){1u=J;1R("1S 1T: "+h.R);C-1}1K=h.1e;1B=h.m}X=1u;1C=1K;U=1s;1i=1B;C 1v(I,N,G)}S 28(I,N,G){