HTML DOM Document implementation
Examples
Does this document has the feature DOM 1.0?
document.implementation.hasFeature("DOM", "1.0");
Try it Yourself »
Does this document has the feature TESLA X?
document.implementation.hasFeature("TESLA", "X");
Try it Yourself »
Definition and Usage
The implementation property returns the DOMimplementation object that handles the document.
Warning!
The DOM 1 Recommendation (1998) only specified one method for this object: hasFeature().
The hasFeature() method was ment to check if a DOM module was supported by the browser:
let answer = document.implementation.hasFeature("DOM", "1.0");
Problem is: All modern browsers always return true.
Syntax
document.implementation
Return Value
| Type | Description |
| Object | A DocumentImplementation object. The document's implementation object. |
Browser Support
document.implementation is a DOM Level 1 (1998) feature.
It is fully supported in all browsers:
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Yes | 9-11 | Yes | Yes | Yes | Yes |
