The Object.getOwnPropertyNames() static method returns an array of all properties (including non-enumerable properties except for those which use Symbol) found directly in a given object.

The encodeURI() function encodes a URI by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two surrogate characters). Compared to encodeURIComponent(), this function encodes fewer characters, preserving those that are part of the URI syntax.

The color attribute is used to provide a potential indirect value, currentcolor, for the fill, stroke, stop-color, flood-color, and lighting-color attributes.

The static import declaration is used to import read-only live bindings which are exported by another module. The imported bindings are called live bindings because they are updated by the module that exported the binding, but cannot be re-assigned by the importing module.

The font-stretch attribute indicates the desired amount of condensing or expansion in the glyphs used to render the text.

The JavaScript exception "incomplete quantifier in regular expression" occurs when a regular expression pattern contains a {, but it does not start a valid quantifier.

The stroke-linejoin attribute is a presentation attribute defining the shape to be used at the corners of paths when they are stroked.

The arguments.length data property contains the number of arguments passed to the function.

The Map object holds key-value pairs and remembers the original insertion order of the keys. Any value (both objects and primitive values) may be used as either a key or a value.

The markerUnits attribute defines the coordinate system for the markerWidth and markerHeight attributes and the contents of the <marker>.