2.1.4 [W3C-HTML51] Section 2.7.4 The DOMElementMap interface

V0377: The DOMElementMap interface is not supported

The specification states:

 2.7.4. The DOMElementMap interface
  
     The DOMElementMap interface represents a set of name-element mappings. It exposes 
     these using the scripting language’s native mechanisms for property access.
         ...
         interface DOMElementMap {
             getter Element (DOMString name);
             setter creator void (DOMString name, Element value);
             deleter void (DOMString name);
         };

EdgeHTML Mode

The DOMElementMap interface is not supported.