JavaScript报表

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JavaScript 360 浏览器 HTML

<%@ page language="java" pageEncoding="utf-8"%>
<%
	String path = request.getContextPath();
 	String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
%>
<%=basePath%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
  		<title>JavaScript绘图</title>
  		<script language="JavaScript">   
     		IE4 = !(navigator.appVersion.charAt(0) < "4" || navigator.appName == "Netscape")   
			var xo=0
			var yo=0
			var Ox = -1   
			var Oy = -1
			var rad = Math.PI/180
			var maxY = 400
			var color = "red"
    
			function print(str){   
				document.write(str)   
			}   
    
			function orgY(y){   
				return maxY-y   
			}
        
			function outPlot(x,y,w,h){   
				print('<span style="position:absolute;left:'+x+';top:'+y+';height:'+h+';width:'+w+';font-size:1px;background-color:'+color+'"></span>')   
			}   
    
			function Plot(x,y){   
				outPlot(x,y,1,1)   
				if(Ox >= 0 || Oy>=0){   
					ShowLine(Ox,Oy,x-Ox,y-Oy)   
				}   
				Ox = x   
				Oy = y   
			}   
    
			function ShowLine(x,y,w,h){   
				if(w<0){
					x += w
					w = Math.abs(w)
				}   
			
				if(h<0){   
					y += h   
					h = Math.abs(h)
				}
				   
				if(w<1) w=1   
				if(h<1) h=1   
				outPlot(x,y,Math.round(w),Math.round(h))   
			}   
    
			function LineTo(x,y){   
				Line(xo,yo,x,y)   
			}   
    
			function sign(n){   
				if(n > 0)   
					return 1   
				if(n < 0)   
					return -1   
				return n   
			}   
    
			function Line(x1,y1,x2,y2){   
				x2 = Math.round(x2)   
				y2 = Math.round(y2)   
				xo = x2   
				yo = y2   
				y1 = orgY(y1)   
				y2 = orgY(y2)   
				var str = ""   
				var i = 0   
			
				var x = x1   
				var y = y1   
				dx = Math.abs(x2-x1)   
				dy = Math.abs(y2-y1)   
				s1 = sign(x2-x1)   
				s2 = sign(y2-y1)   
			
				if(dx == 0 || dy == 0){   
					ShowLine(x1,y1,x2-x1,y2-y1)   
					return   
				}   
			
				if(dx > dy){   
					temp = dx   
					dx = dy   
					dy = temp   
					key = 1   
				}else{
					key = 0
				}   
				e = 2*dy-dx   
			
				for(i=0;i<dx;i++){   
					px = 0   
					py = 0   
					Plot(x,y)   
					while(e>=0){   
						if(key == 1){   
							x += s1   
							px += s1   
						}else{   
							y += s2   
							py += s2   
						}   
						e = e-2*dx   
					}   
					if(key == 1)   
						y += s2   
					else   
						x += s1   
					e = e+2*dy   
				}   
			}     
       
			function MoveTo(x,y) {   
				Ox = Oy = -1   
				xo = Math.round(x)   
				yo = Math.round(y)   
			}   
       
			//   圆   
			function Cir(x,y,r){   
				MoveTo(x+r,y)   
				for(i=0;i<=360;i+=5){   
					LineTo(r*Math.cos(i*rad)+x,r*Math.sin(i*rad)+y)   
				}   
			}   
     
			//   弧形   
			function Arc(x,y,r,a1,a2){   
				MoveTo(r*Math.cos(a1*rad)+x,r*Math.sin(a1*rad)+y)   
				for(i=a1;i<=a2;i++){   
					LineTo(r*Math.cos(i*rad)+x,r*Math.sin(i*rad)+y)   
				}   
			}   
     
			//   扇形   
			function Pei(x,y,r,a1,a2){   
				MoveTo(x,y)   
				for(var i=a1;i<=a2;i++){   
					LineTo(r*Math.cos(i*rad)+x,r*Math.sin(i*rad)+y)   
				}   
				LineTo(x,y)   
			}   
     
			//   弹出扇形   
			function PopPei(x,y,r,a1,a2){   
				dx = r*Math.cos((a1+(a2-a1)/2)*rad)/10   
				dy = r*Math.sin((a1+(a2-a1)/2)*rad)/10   
				x += dx   
				y += dy   
				MoveTo(x,y)   
				for(var i=a1;i<=a2;i++){   
					LineTo(r*Math.cos(i*rad)+x,r*Math.sin(i*rad)+y)   
				}   
				LineTo(x,y)   
			}   
       
			//   矩形   
			function Rect(x,y,w,h){   
				MoveTo(x,y)   
				LineTo(x+w,y)   
				LineTo(x+w,y+h)   
				LineTo(x,y+h)   
				LineTo(x,y)   
			}   
       
			//   准星   
			function zhunxing(x,y){   
				var ox = xo   
				var oy = yo   
				var oColor = color   
				color = "#000000"   
				Line(x-5,y,x+6,y)   
				Line(x,y-6,x,y+5)   
				print('<span style="position:absolute;font-size:10pt;left:'+(x+5)+';top:'+orgY(y+5)+';">['+x+','+y+']</span>')   
				color = oColor   
				xo = ox   
				yo = oy   
			} 
    
			//   标注   
			function biaozhuStr(x,y,s){   
				return '<span style="position:absolute;font-size:10pt;left:'+x+';top:'+orgY(y)+';">'+s+'</span>'   
			}   
     
			function biaozhu(x,y,s,t){   
				var ox = xo   
				var oy = yo   
				var oColor = color   
				point = "p01.gif"   
				if(t==1){   
					print(biaozhuStr(x-5,y+6,"·"+s))   
				}   
				if(t==2){   
					print(biaozhuStr(xo+x*Math.cos(y*rad)-10,yo+x*Math.sin(y*rad),s))   
				}   
				color = oColor   
				xo = ox   
				yo = oy   
			}   
    	</script>
 	</head>

 	<body>
	  	<table border="0" width="100%">
		   	<tr>
		    	<td width="100%" style="font-family: 方正舒体; font-size: 18pt; color: #FF0000" class="t1"> 
		    		JavaScript绘图
		    	</td>
			</tr>
		   <tr>
		    	<td width="100%" style="font-family: 幼圆; font-size: 12pt; color: #008000" class="t2">
		    		如果需要在网页上提供图形化的资料，通常是将其制作成图片，但这样一来网络上的开销就太大了。有什么办法呢？这里向你提供一组JavaScript函数，来解决这一问题。虽然简单了点，但是对画点线图来说还是绰绰有余的！
		    	</td>
		   	</tr>
	  	</table>
		<script>   
	    	if(IE4){   
		     	//基本图形   
				color = "maroon"   
				Cir(50,40,20)   
				Arc(100,40,20,60,120)   
				Pei(150,60,40,240,300)   
				Rect(200,20,40,40)   
		  
		     	//   折线图   
				color = "#FF0000"   
				var jd = new Array(203,232,277,223,271,234,273,284,276,250,267,28)   
				var rq = new Array('我','好','相','你','啊','！','你','知','道','吗','?','love')   
				MoveTo(30,jd[0]-40)   
				biaozhu(xo,yo,jd[0])   
				for(i=1;i<jd.length;i++){   
		      		LineTo(i*30+30,jd[i]-40)   
		      		biaozhu(xo,yo,rq[i],1)   
		     	}   
		     	color = "#C0C0C0"   
		     	Line(30,140,i*30+30,140)   
		     	Line(30,140,30,260)   
		  
		     	//   饼图   
		     	color = "#00FF00"   
		     	var gc = new Array(150,120,200,180,180)   
		     	var s = 0   
		     	var m = 0   
		     	var n = 0   
		     	for(i = 0;i < gc.length;i++){   
		      		s += gc[i]   
		      		if(gc[i] > m){   
		       			m = gc[i]   
		       			n = i   
		      		}   
		     	}   
		     	var k = s/360   
		     	var mm = 0   
		     	var a =0   
		     	for(i = 0;i < gc.length;i++){   
		      		b = Math.round((gc[i] + mm)/k)   
		      		if(i == n)   
		       			PopPei(600,150,100,a,b)   
		      		else   
		       			Pei(600,150,100,a,b)   
		      		biaozhu(60,a+(b-a)/2,Math.round(gc[i]/s*100)+"%",2)   
		      		mm = mm+gc[i]   
		      		a = b   
		     	}   
		    
		     	//   十字标注   
		     	MoveTo(280,20)   
		     	zhunxing(xo,yo)   
			}else{   
	     		document.write("<p>   </p><table   bgcolor=#FF0000><tr><td><font   color=#FFFF00>对不起！您的浏览器不能支持该页的某些功能，请换用IE4.0以上版本的浏览器！谢谢！</font></td></tr></table>")   
	    	}   
	 	</script>
	</body>
</html>

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