Mathias Schäfer show me an other, to my mind, the best way:
function init() {
var fsupport =
((document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Filter",
"1.1")) || (typeof
document.createElementNS('http://www.w3.org/2000/svg','feGaussianBlur').setStdDeviation
== 'function'))? true : false;
if (!fsupport) noFilter();
}
--- In [email protected], "Andreas" <paw...@...> wrote:
>
> Her is the final, short version:;
>
> function noFilter() {
> document.getElementById("highlight").setAttribute("opacity",0);
> document.getElementById("highlightwing").setAttribute("opacity",0)
> }
> function init() {
> var fsupport =
> ((document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Filter",
> "1.1")) || (!!document.createElementNS &&
> /SVGFE/.test(toString.call(document.createElementNS('http://www.w3.org/2000/svg','feGaussianBlur')))))?
> true : false;
> if (!fsupport) noFilter();
> }
> document.addEventListener("DOMContentLoaded", init, false);
>
>
>
>
> --- In [email protected], "Andreas" <pawelf@> wrote:
> >
> > Cool,
> >
> > now, i use this:
> >
> > function init() {
> > if
> > ((document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#Filter",
> > "1.1")) || (!!document.createElementNS &&
> > /SVGFE/.test(toString.call(document.createElementNS('http://www.w3.org/2000/svg','feGaussianBlur'))))){
> > var fsupport = 'true';
> > } else{
> > var fsupport = 'false';
> > }
> > if (fsupport != 'true') noFilter();
> > }
> >
> >
> >
> > Try this:
> > http://labs.pixelfans.de/Twitterbird3_withJS.svg
> >
> >
> > --- In [email protected], "Erik Dahlstrom" <ed@> wrote:
> > >
> > > On Thu, 25 Nov 2010 19:05:58 +0100, Andreas <pawelf@> wrote:
> > >
> > > > That works, but what is
> > > >
> > > > /SVGFE/.test ?
> > >
> > > That's a regexp string match on the returned object, all SVG filter
> > > primitive interfaces start with "SVGFE", eg "SVGFEConvolveMatrixElement"
> > > [1].
> > >
> > > Like Chris Peto writes, it doesn't work in IE8 with the Adobe plugin. My
> > > suggested way of testing was meant primarily for checking for native
> > > support. Also the Adobe plugin support docs[2] doesn't list all the svg
> > > filter primitive elements in the DOM section, which could be another
> > > reason for failing there. An alternative could be to use a two-level
> > > test,
> > > first check with hasFeature, and if that returns false check using the
> > > DOM
> > > interfaces.
> > >
> > > Cheers
> > > /Erik
> > >
> > > [1]
> > > http://www.w3.org/TR/SVG11/filters.html#InterfaceSVGFEConvolveMatrixElement
> > > [2] http://www.adobe.com/svg/indepth/pdfs/CurrentSupport.pdf
> > >
> > > --
> > > Erik Dahlstrom, Core Technology Developer, Opera Software
> > > Co-Chair, W3C SVG Working Group
> > > Personal blog: http://my.opera.com/macdev_ed
> > >
> >
>
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