Feature detection of foreignObject in SVG
feature-detection, svg
Solution
This should work if you want to use foreignObject because it integrates html content...
<switch>
<g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" requiredExtensions="http://www.w3.org/1999/xhtml">
<foreignObject >
</foreignObject>
</g>
<text font-size="10" font-family="Verdana">
No foreignObject
</text>
</switch>
The requiredExtensions part proposed to w3c and this was their response. Firefox does implement this, but I havent tested anything else though. You may be able to get away with just the requiredFeatures attribute as Erik suggests.
If you want to test in javascript try
var supported = document.implementation.hasFeature("http://w3.org/TR/SVG11/feature#Extensibility", "1.1"); –
Problem
I am using the foreignObject element in SVG, however IE9 does not support this element. I am looking at a way the detect this feature. Modernizr does not detect this feature and it seems I can not use createSVGForeignObject (not available on SVGSVGElement) like they do for rectangle (createSVGRect). Thanks!