573127-1.html (465B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <script> 5 6 function boom() 7 { 8 var mspace = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mspace"); 9 var emptyset = document.createElementNS("http://www.w3.org/1998/Math/MathML", "emptyset"); 10 emptyset.setAttributeNS(null, "mathvariant", "3"); 11 mspace.appendChild(emptyset); 12 document.body.appendChild(mspace); 13 emptyset.removeAttribute('mathvariant'); 14 } 15 16 </script> 17 </head> 18 19 <body onload="boom()"></body> 20 </html>