The Promise.race() static method takes an iterable of promises as input and returns a single Promise. This returned promise settles with the eventual state of the first promise that settles.

The includes() method of Array instances determines whether an array includes a certain value among its entries, returning true or false as appropriate.

The values() method of Array instances returns a new array iterator object that iterates the value of each item in the array.

The [@@iterator]() method of arguments objects implements the iterable protocol and allows arguments objects to be consumed by most syntaxes expecting iterables, such as the spread syntax and for...of loops. It returns an array iterator object that yields the value of each index in the arguments object.

Synchronized Multimedia Integration Language (SMIL) is an XML-based language for writing interactive multimedia presentations. Authors can use SMIL syntax in other XML-based languages to define the timing and layout of elements for animation. SMIL allows you to:

The splice() method of Array instances changes the contents of an array by removing or replacing existing elements and/or adding new elements in place.

The x1 attribute is used to specify the first x-coordinate for drawing an SVG element that requires more than one coordinate. Elements that only need one coordinate use the x attribute instead.

The Array.from() static method creates a new, shallow-copied Array instance from an iterable or array-like object.

The style attribute allows to style an element using CSS declarations. It functions identically to the style attribute in HTML.

The u1 attribute specifies list of Unicode characters (refer to the description of the unicode attribute of the <glyph> element for a description of how to express individual Unicode characters) and/or ranges of Unicode characters, which identify a set of possible first glyph in a kerning pair.