dom - creating circles with svg and javascript -

-

(updated) i'm having issues regarding svg , javascript. want create series of circles on top of 1 another, radius (r) values increasing 1 each time loop goes round, creates sort of pattern. here have far(for loop values forum post, rather while loop execute 10 times) - 

<!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>dynamic svg!</title> </head> <defs>     <svg height="10000" width="10000" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">          <circle id="cir1" cx="300" cy="300" r="40" stroke="yellow" stroke-width="" fill="none"/> </svg> </defs> <script>    var svgns = "http://www.w3.org/2000/svg";    (var x = 0; x < 5000; x += 50) {        (var y = 0; y < 3000; y += 50) {           var circle = document.createelementns(svgns, 'circle');           circle.setattributens(null, 'x', x);           circle.setattributens(null, 'y', y);           circle.setattributens(null, 'height', '50');           circle.setattributens(null, 'width', '50');           document.getelementbyid('cir1').appendchild(circle);         }    } </script> <body> </body> </html>

any out there? thanks.

ok, is, had fix in order code working:

  • you append circle element, should append svg-container. circle element has no child elements.
  • you did not set styles circles, transparent.
  • the coordinates in circle element called cx , cy instead of x , y.
  • the <defs> element should child of <svg> element. within wont rendered.

javascript

var svgns = "http://www.w3.org/2000/svg",     container = document.getelementbyid( 'cont' ); (var x = 0; x < 500; x += 50) {     (var y = 0; y < 300; y += 50) {         var circle = document.createelementns(svgns, 'circle');         circle.setattributens(null, 'cx', x);         circle.setattributens(null, 'cy', y);         circle.setattributens(null, 'r', 50);         circle.setattributens(null, 'style', 'fill: none; stroke: blue; stroke-width: 1px;' );         cont.appendchild(circle);     } }

html 

<svg id="cont" height="1000" width="1000" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">     <circle id="cir1" cx="300" cy="300" r="40" stroke="yellow" stroke-width="" fill="none" /> </svg>

example fiddle

i adjusted sizes mere test, quite big.


Comments

Post a Comment

Popular posts from this blog

Change the color of an oval at click in Java AWT -

-
i have draw ovals in java, , @ click change color. beginning tried change color after 20 ms, doesn't work. my code is: public class mycomponentnew extends frame { public graphics2d g2d; public mycomponentnew(string title) { super(title); setsize(400, 550); } @override public void paint(graphics g) { this.g2d = (graphics2d) g; this.g2d.setcolor(color.red); this.g2d.filloval(10, 55, 50, 100); } public void changecolor () { this.g2d.setcolor(color.blue); this.g2d.filloval(10, 55, 50, 100); } } and in class main method have: mycomponentnew m; m = new mycomponentnew("fereastra cu baloane"); m.setvisible(true); m.addwindowlistener(new windowadapter() { @override public void windowclosing(windowevent we) { system.exit(0); } }); try { thread.sleep(20); } catch(interruptedexception e) {} m.changecolor(); the color of oval remains red. ...
Read more

c# - Unity IoC Lifetime per HttpRequest for UserStore -

-
i'm trying clean default implementation of accountcontroller.cs comes out of box in new mvc5/owin security implementation. have modified constructor this: private usermanager<applicationuser> usermanager; public accountcontroller(usermanager<applicationuser> usermanager) { this.usermanager = usermanager; } also, have created lifetime manager unity looks this: public class httpcontextlifetimemanager<t> : lifetimemanager, idisposable { private httpcontextbase _context = null; public httpcontextlifetimemanager() { _context = new httpcontextwrapper(httpcontext.current); } public httpcontextlifetimemanager(httpcontextbase context) { if (context == null) throw new argumentnullexception("context"); _context = context; } public void dispose() { this.removevalue(); } public override object get...
Read more

I am trying to solve the error message 'incompatible ranks 0 and 1 in assignment' in a fortran 95 program. -

-
i writing program in fortran find velocity of parachuting person in relation time. keep getting error can't fix. new programming , appreciated. the error is v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) 1 error: incompatible ranks 0 , 1 in assignment @ (1) and program is program para integer :: real :: v(11) !velocity real :: q !initial velocity real :: h !time step real :: c !drag coefficient real :: m !mass ! gravity equal 32 ft/s^2 write (*,*)'enter time step' read(*,*)h write(*,*)'enter initial velocity' read(*,*)q write(*,*)'enter drag coefficient' read(*,*)c write(*,*)'enter mass' read(*,*)m i=1,10 ! 1 10, 1 being interval. end v(i+1)=v(i)+[32-((c*v(i)*v(i))/m)]*(h) q=v(1) end program you cannot use [] normal parenthesis in expressions. array constructor, [ items ] means array items elements. end do should after line.
Read more