html 圣诞树代码 

  1 <!DOCTYPE HEML PUBLIC>
  2 <html>
  3     <head>
  4     <meta charset="utf-8">
  5         <style>
  6             html, body
  7             {
  8                 width: 100%;
  9                 height: 100%;
 10                 margin: 0;
 11                 padding: 0;
 12                 border: 0;
 13             }
 14             
 15             div
 16             {
 17                 margin: 0;
 18                 padding: 0;
 19                 border: 0;
 20             }
 21             .nav
 22             {
 23                 position: absolute;
 24                 top: 0;
 25                 left: 0;
 26                 width: 100%;
 27                 height: 27px;
 28                 background-color: white;
 29                 color: black;
 30                 text-align: center;
 31                 line-height: 25px;
 32             }
 33             a
 34             {
 35                 color: black;
 36                 text-decoration: none;
 37                 border-bottom: 1px dashed black;
 38             }
 39             a:hover
 40             {
 41                 border-bottom: 1px solid red;
 42             }
 43             .previous
 44             {
 45                 float: left;
 46                 margin-left: 10px;
 47             }
 48             .next
 49             {
 50                 float: right;
 51                 margin-right: 10px;
 52             }
 53             .green
 54             {
 55                 color: green;
 56             }
 57             .red
 58             {
 59                 color: red;
 60             }
 61             textarea
 62             {
 63                 width: 100%;
 64                 height: 100%;
 65                 border: 0;                
 66                 padding: 0;                
 67                 margin: 0;                
 68                 padding-bottom: 20px;              
 69             }            
 70             .block-outer            
 71             {                
 72                 float: left;                
 73                 width: 22%;                
 74                 height: 100%;                
 75                 padding: 5px;                
 76                 border-left: 1px solid black;                
 77                 margin: 30px 3px 3px 3px;                
 78             }            
 79             .block-inner            
 80             {                
 81                 height: 68%;                
 82             }            
 83             .one            
 84             {                
 85                 border: 0;                
 86             }
 87         </style>      
 88     </head>      
 89 <body marginwidth="0" marginheight="0">
 90     <canvas id="c" height="356" width="446">
 91     <script>              
 92         var collapsed = true;            
 93         function toggle()            
 94         {                  
 95             var fs = top.document.getElementsByTagName('frameset')[0];                
 96             var f = fs.getElementsByTagName('frame');                
 97             if (collapsed)                
 98             {                      
 99                 fs.rows = '250px,*';                    
100                 fs.noResize = false;                    
101                 f[0].noResize = false;                      
102                 f[1].noResize = false;
103             }                 
104             else
105             {                      
106                 fs.rows = '30px,*';
107                 fs.noResize = true;
108                 f[0].noResize = true;
109                 f[1].noResize = true;
110             }                  
111             collapsed = !collapsed;            
112         }
113     </script>  
114     <script>              
115         var b = document.body;            
116         var c = document.getElementsByTagName('canvas')[0];            
117         var a = c.getContext('2d');            
118         document.body.clientWidth;
119     </script>  
120     <script>
121         M=Math;
122         Q=M.random;J=[];
123         U=16;
124         T=M.sin;
125         E=M.sqrt;
126         for(O=k=0;x=z=j=i=k<200;)
127         with(M[k]=k?c.cloneNode(0):c)
128         {    
129             width=height=k?32:W=446;        
130             with(getContext('2d'))        
131             if(k>10|!k)        
132             for(        
133             font='60px Impact',        
134             V='rgba(';I=i*U,fillStyle=k?k==13?V+'205,205,215,.15)':        
135             V+(147+I)+','+(k%2?128+I:0)+','+I+',.5)':'#cca',i<7;        
136             )    
137             beginPath(        
138             fill(            
139             arc(                
140             U-i/3,                
141             24-i/2,                
142             k==13?4-(i++)/2:8-i++,                
143             0,                
144             M.PI*2,1                
145             )            
146             )            
147             );
148             else for(;
149             x=T(i),        
150             y=Q()*2-1,        
151             D=x*x+y*y,        
152             B=E(D-x/.9-1.5*y+1),        
153             R=67*(B+1)*(L=k/9+.8)>>1,        
154             i++<W;        
155             )
156             if(D<1)    
157             beginPath(        
158             strokeStyle=V+R+','+(R+B*L>>0)+',40,.1)'        
159             ),        
160             moveTo(U+x*8,U+y*8),        
161             lineTo(U+x*U,U+y*U),        
162             stroke();
163             for(        
164             y=H=k+E(k++)*25,        
165             R=Q()*W;        
166             P=3,j<H;        
167             )    
168             J[O++]=[x+=T(R)*P+Q()*6-3,y+=Q()*U-8,z+=T(R-11)*P+Q()*6-3,j/H*20+((j+=U)>H&Q()>.8?Q(P=9)*4:0)>>1]
169         }
170         setInterval(function G(m,l)
171         {    
172             A=T(D-11);    
173             if(l)
174             return(        
175             m[2]-l[2])*A+(l[0]-m[0])*T(D);        
176             a.clearRect(0,0,W,W);        
177             J.sort(G);
178             for(        
179             i=0;        
180             L=J[i++];        
181             a.drawImage        
182             (            
183             M[L[3]+1],207+L[0]*A+L[2]*T(D)>>0,L[1]>>1)    )    
184             {        
185                 if(i==2e3)        
186                 a.fillText        
187                 (            
188                 'Happy Christmas!',            
189                 U,345);
190                 if(!(i%7))        
191                 a.drawImage        
192                 (
193                 M[13],
194                 ((157*(i*i)+T(D*5+i*i)*5)%W)>>0,
195                 ((113*i+(D*i)/60)%(290+i/99))>>0
196                 );
197             }    
198             D+=.02
199         },1)
200     </script>
201 </body>
202 </html>

 

posted @ 2021-12-16 22:36  芸小宇  阅读(43534)  评论(3)    收藏  举报