DOMImplementation: hasFeature() method
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
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
js
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
None (undefined).
Specifications
| Specification |
|---|
| DOM Standard # dom-domimplementation-hasfeature |
Browser compatibility
BCD tables only load in the browser
See also
- The
DOMImplementationinterface it belongs to.