The unshift() method of Array instances adds the specified elements to the beginning of an array and returns the new length of the array.

The y2 attribute is used to specify the second y-coordinate for drawing an SVG element that requires more than one coordinate. Elements that only need one coordinate use the y attribute instead.

The repeat() method of String values constructs and returns a new string which contains the specified number of copies of this string, concatenated together.

SVG images can be used as an image format, in a number of contexts. Browsers support SVG images in:

The writing-mode attribute specifies whether the initial inline-progression-direction for a <text> element shall be left-to-right, right-to-left, or top-to-bottom. The writing-mode attribute applies only to <text> elements; the attribute is ignored for <tspan>, <tref>, and <textPath> sub-elements. (Note that the inline-progression-direction can change within a <text> element due to the Unicode bidirectional algorithm and properties direction and unicode-bidi.)

The Intl.Collator object enables language-sensitive string comparison.

The x attribute defines an x-axis coordinate in the user coordinate system.

The __lookupSetter__() method of Object instances returns the function bound as a setter to the specified property.

The getFullYear() method of Date instances returns the year for this date according to local time.

The getMonth() method of Date instances returns the month for this date according to local time, as a zero-based value (where zero indicates the first month of the year).