A Developer’s Guide to HTML5 Canvas
make sure you defined height/width in java script.
also correct this
adi007me_syn :HTML 5 is supported only on IE v9 and above.
Also I tried your given code and it runs successfully in Internet Explorer version 9.08112.16421 i.e. IE9
[__i__]Browser Support for HTML5<br />
HTML5 is not yet an official standard, and no browsers have full HTML5 support.<br />
But all major browsers (Safari, Chrome, Firefox, Opera, Internet Explorer) continue to add new HTML5 features to their latest versions.
and HTML5 & CSS3 Support
] best describes that-
Quote:no browsers have full HTML5 support.
I think you should update your browser.