DOMImplementation: hasFeature() method

{{ApiRef("DOM")}}{{Deprecated_Header}}

The DOMImplementation.hasFeature() method returns a boolean flag indicating if a given feature is supported. It is deprecated and modern browsers return true in all cases.

The different implementations fairly diverged in what kind of features were reported. The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.

Syntax

hasFeature(feature, version)

Parameters

• feature
  • : A string representing the feature name.
• version
  • : A string representing the version of the specification defining the feature.

Return value

A boolean value of true.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• The {{domxref("DOMImplementation")}} interface it belongs to.