534366-2.html (1085B)
1 <html> 2 <head> 3 <style type="text/css"> 4 5 body { font-family: monospace; width: 4ch; } 6 body::first-line { } 7 body *::before { content: 'w';} 8 9 </style> 10 11 <script type="text/javascript"> 12 13 function boom() 14 { 15 var de = document.documentElement; 16 var body = document.body; 17 18 var span = document.createElementNS("http://www.w3.org/1999/xhtml", "span"); 19 var r1 = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mrow"); 20 var mmm = document.createElementNS("http://www.w3.org/1998/Math/MathML", "mmultiscripts"); 21 22 body.appendChild(span); 23 r1.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", "mrow")); 24 body.appendChild(r1); 25 body.appendChild(mmm); 26 de.offsetHeight; 27 r1.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow')); 28 de.offsetHeight; 29 mmm.appendChild(document.createElementNS("http://www.w3.org/1998/Math/MathML", 'mrow')); 30 de.offsetHeight; 31 32 document.removeChild(de); 33 document.appendChild(de); 34 de.offsetHeight; 35 } 36 37 window.addEventListener("load", boom); 38 39 </script> 40 </head> 41 <body></body> 42 </html>