1205900.html (488B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 </head> 5 6 <body> 7 <canvas id="canvas0"></canvas> 8 9 <script> 10 var canvas0=document.getElementById("canvas0"); 11 var ctx=canvas0.getContext("2d"); 12 canvas0.addEventListener("DOMAttrModified", 13 function(event) { 14 canvas0.toBlob(function(){},"image/jpeg",1); 15 }, true); 16 canvas0.setAttribute("height",470) 17 </script> 18 19 </body> 20 </html>