呵呵,这算什么,我这也有一个给你看看
<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 = -1var 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=0var 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-dxfor(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)
Line(0,0,20,20)
// 折线图
color = "#FF0000"
var jd = new Array(
203,232,277,223,271,234,273,284,276,250,267,280
)
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,jd[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>
<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 = -1var 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=0var 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-dxfor(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)
Line(0,0,20,20)
// 折线图
color = "#FF0000"
var jd = new Array(
203,232,277,223,271,234,273,284,276,250,267,280
)
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,jd[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>
你这段在这里被贴出来上百次了呵呵,我写过它的好几个改进版,也贴过十来次了。用它的方法能画出来实心的饼图吗?
<HTML>
<HEAD>
<TITLE>饼图</TITLE>
<script>
function DrawPieChart()
{
var totalvalue = value1.value/360 + value2.value/360 + value3.value/360 + value4.value/360;
var per1 = value1.value/totalvalue;
var per2 = value2.value/totalvalue;
var per3 = value3.value/totalvalue;
var per4 = value4.value/totalvalue; var per12 = per1 + per2;
var per123 = per1 + per2 + per3;Chart.innerHTML = "<OBJECT ID='PieChart' CLASSID='CLSID:369303C2-D7AC-11D0-89D5-00A0C90833E6' STYLE='position:relative;top:0;left:0;width:400;height:400'><PARAM NAME='Line0001' ALUE='SetLineColor(255, 0, 127)'><PARAM NAME='Line0002' VALUE='SetFillStyle(1)'><PARAM NAME='Line0003' VALUE='SetFillColor(0, 255, 80)'><PARAM NAME='Line0004' VALUE='Pie(-100, -100, 200, 200, 0, "+ per1 +", 0)'><PARAM NAME='Line0005' VALUE='SetFillStyle(1)'><PARAM NAME='Line0006' VALUE='SetFillColor(0, 0, 255)'><PARAM NAME='Line0007' VALUE='Pie(-100, -100, 200, 200, "+ per1 + ", " + per2 + ", 0)'><PARAM NAME='Line0008' VALUE='SetFillStyle(1)'><PARAM NAME='Line0009' VALUE='SetFillColor(0, 128, 128)'><PARAM NAME='Line0010' VALUE='Pie(-100, -100, 200, 200, "+per12+","+per3+", 0)'><PARAM NAME='Line0011' VALUE='SetFillStyle(1)'><PARAM NAME='Line0012' VALUE='SetFillColor(255, 0, 0)'><PARAM NAME='Line0013' VALUE='Pie(-100, -100, 200, 200, "+per123+","+per4+", 0)'></OBJECT>"}
</script>
</HEAD>
<BODY>
<table border=1 width=100%>
<tr><td id="Chart" width=50% height=400 align=center>
准备画图</td>
<td width=50%>
<p align=center>
输入4个数<br>
<input id="value1" type=text size=6 value=0>
<input id="value2" type=text size=6 value=0>
<input id="value3" type=text size=6 value=0>
<input id="value4" type=text size=6 value=0>
</p>
<p align=center>
<input type=button onclick="DrawPieChart()" value="画饼图">
</p>
</td>
</tr>
</table>
</BODY>
</HTML>
这是activex的实现,也被贴出来多少次啦。但是怎么cross browser呢?
这个……
难道算出来以后一个像素一个像素的填充???
最近看到你以前那贴说写JS都要遇到的事情,惭愧,很多都还没有去做.最近自己写一带checkbox的树,没办法,xml不熟,用纯js来写了,过几天给你看一下.哎,什么时候才可以有你们十分一,emu,net_lover,qiushuiwuhen.....无望..
参与讨论者,加分!
http://expert.csdn.net/Expert/topic/1629/1629593.xml?temp=.7047846
div1.innerHTML = newPie(300,300,150,-45,45,"red")+newPie(300,300,150,45,315,"green");如果有一个扇形超过半圆并且在最后画的话有可能覆盖其他的扇形。解决方法:1 先画大扇形:
div1.innerHTML = newPie(300,300,150,45,315,"green")+newPie(300,300,150,-45,45,"red");2 画的时候分层: var z = (endAngle-startAngle>Math.PI)?-1:1;
for (var i=lines.length-1;i>-1;i--)
rs[i] = "<span style='top:"+lines[i][0][1]+";left:"+lines[i][0][0]+";height:1;width:"+(lines[i][1][0]-lines[i][0][0]+1)+";position:absolute;font-size:1px;background-color:"+color+";z-index="+z+"'></span>";
俺也喜欢javascript了。
就是水平太差,看复杂一点点的就不大懂了。
这帖子好,俺先用装弼马翁的瓶子收了再说。
以后慢慢看。
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<META NAME="Author" CONTENT="emu(ston)">
<META NAME="Keywords" CONTENT="javascript,chart">
<title>emu's paint without vlm</title>
<style>
.emuW{position:absolute;font-size:1px;width:1}
.emuH{position:absolute;font-size:1px;height:1}
</style>
</head>
<body>
<button onclick="testNewPie()">»­±ýͼ</button>
<div id=canvas></div>
<SCRIPT LANGUAGE="JavaScript">
<!--
var div1 = document.getElementById("canvas")
function testNewPie(){
div1.innerHTML = newPie(250,220,150,0,45,"red")+newPie(250,220,150,45,110,"blue")+newPie(250,220,150,110,250,"yellow")+newPie(250,220,150,250,360,"green");
}
var points = [];
function newPie(x0,y0,radius,startAngle,endAngle,color){
if (points.length<radius<<2) points.length=radius<<2;
var startAngle = startAngle*Math.PI/180;
var endAngle = endAngle*Math.PI/180;
var maxX=0,maxY=0,minX=0,minY=0;
var pointsLength = 0;
var lines ;
// get arc points
var step = 1/radius;
for (var i=startAngle;i<endAngle;i+=step){
var x = Math.round(Math.sin(i)*radius);
var y = Math.round(Math.cos(i)*radius)
points[pointsLength++]=[x,y];
if (maxX<x) maxX=x;
if (minX>x) minX=x;
if (maxY<y) maxY=y;
if (minY>y) minY=y;
} // get radius points
var dx1=Math.sin(startAngle)*radius;
var dy1=Math.cos(startAngle)*radius;
var dx2=Math.sin(endAngle)*radius;
var dy2=Math.cos(endAngle)*radius;
var L = Math.sqrt(dx1*dx1+dy1*dy1);
var stepx1 = dx1/L , stepy1 = dy1/L ,stepx2 = dx2/L , stepy2 = dy2/L ;
for (var i=0;i<L;i+=1){
points[pointsLength++] = [Math.round(stepx1*i),Math.round(stepy1*i)]
points[pointsLength++] = [Math.round(stepx2*i),Math.round(stepy2*i)]
} var dx = maxX-minX+1;
var dy = maxY-minY+1;
if (dx>dy){
lines = new Array(dy);
for (var i=pointsLength-1;i>-1;i--){
var p0 = points[i];
var px = p0[0];
var y = p0[1]-minY;
if (lines[y]){
if (lines[y][0]>px) //left point
lines[y][0] = px;
if (lines[y][1]<px) //right point
lines[y][1] = px;
}else{
lines[y]=[px,px];
}
}
for (var i=dy-1;i>-1;i--){
var left = lines[i][0];
lines[i] = "<p class=emuH style='top:"+(i+minY+y0)+";left:"+(left+x0)+";width:"+(lines[i][1]-left)+";background-color:"+color+"'/>";
}
}else{
lines = new Array(dx);
for (var i=pointsLength-1;i>-1;i--){
var p0 = points[i];
var py = p0[1];
var x = p0[0]-minX;
if (lines[x]){
if (lines[x][0]>py) //top point
lines[x][0] = py;
if (lines[x][1]<py) //buttom point
lines[x][1] = py;
}else{
lines[x]=[py,py];
}
}
for (var i=dx-1;i>-1;i--){
var top = lines[i][0];
lines[i] = "<p class=emuW style='left:"+(i+minX+x0)+";top:"+(top+y0)+";height:"+(lines[i][1]-top)+";background-color:"+color+"'/>";
}
}
return lines.join("");
}
//-->
</SCRIPT>
</body>
</html>这下了一倍多,好像已经无法再快了呵呵。
<HTML XMLNS:t ="urn:schemas-microsoft-com:time";
XMLNS:v="urn:schemas-microsoft-com:vml"; xmlns:MSHelp=http://msdn.microsoft.com/msHelp>
<HEAD>
<TITLE>Use keyTimes with a Values List</TITLE> <?IMPORT namespace="t" implementation="#default#time2">
<?IMPORT namespace="v" implementation="#default#VML">
</HEAD>
<BODY>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<input><br>
<t:ANIMATE id="oAnim" begin="1" dur="5" fill="hold" targetElement="oOval"
attributeName="width" calcMode="linear" values="100; 300; 500"
keyTimes="0;.7; 1" /><v:oval id="oOval" fillcolor="red" style="position:absolute;
top:200;left:50;width:100;height:100;align:center" /></DIV>
</BODY>
</HTML>
http://expert.csdn.net/Expert/topic/840/840502.xml