The stdDeviation attribute defines the standard deviation for the blur operation.

The xChannelSelector attribute indicates which color channel from in2 to use to displace the pixels in in along the x-axis.

The xlink:arcrole attribute specifies a contextual role for the element and corresponds to the RDF Primer notion of a property.

The replaceAll() method of String values returns a new string with all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function to be called for each match. The original string is left unchanged.

As an XML dialect, SVG is namespaced. It is important to understand the concept of namespaces and how they are used if you plan to author SVG content. Namespaces are essential to user agents that support multiple XML dialects; browsers must be very strict. Taking the time to understand namespaces now will save you from future headaches.

The stroke-opacity attribute is a presentation attribute defining the opacity of the paint server (color, gradient, pattern, etc.) applied to the stroke of a shape.

The JavaScript strict mode-only exception "setting getter-only property" occurs when there is an attempt to set a new value to a property for which only a getter is specified.

The JavaScript exception "called on incompatible target (or object)" occurs when a function (on a given object), is called with a this not corresponding to the type expected by the function.

The tabindex attribute allows you to control whether an element is focusable and to define the relative order of the element for the purposes of sequential focus navigation.

The Intl.DurationFormat object enables language-sensitive duration formatting.