jQuery This text is displayed if your browser does not support HTML5 Canvas. javascript html5 canvas shareimprove this question edited Dec 20 '13 at 6:31 CRABOLO 7,5271414 gold badges3434 silver badges6262 bronze badges asked Jan 31 '11 at 6:49 Bill Yan 1,83633 gold badges1919 silver badges3434 bronze badges 4 is invalid and invokes quirks mode, which changes the behaviour of a lot of DOM things! is the correct DTD. – Delan Azabani Apr 22 '11 at 12:19 add a comment 3 Answers active oldest votes 9 enter image description here This text is displayed if your browser does not support HTML5 Canvas.