var a=document.implementation.hasFeature("Core","2.0");
            var b=document.implementation.hasFeature("Core","3.0");
            var c=document.implementation.hasFeature("HTML","2.0");
            var d=document.implementation.hasFeature("View","2.0");
            var e=document.implementation.hasFeature("XML","2.0");
            console.log(a,b,c,d,e);

 

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