How to get information about the implementation of the DOM features
DOM implementation
The document.implementation property has
information about the implementation of the DOM features.
It returns a DOMImplementation object.
DOMImplementation.hasFeature tells you the detail.
Example
<!DOCTYPE HTML>
<html>
<body>
<script>
var features = ["Core", "HTML", "CSS", "Selectors-API"];
var levels = ["1.0", "2.0", "3.0"];
document.writeln("<pre>");
for (var i = 0; i < features.length; i++) {
document.writeln("Checking for feature: " + features[i]);
for (var j = 0; j < levels.length; j++) {
document.write(features[i] + " Level " + levels[j] + ": ");
document.writeln(document.implementation.hasFeature(features[i],
levels[j])); <!-- w ww. j av a 2s . c o m-->
}
}
document.write("</pre>")
</script>
</body>
</html>