The JavaScript exception "missing name after . operator" occurs when there is a problem with how the dot operator (.) is used for property access.

The from attribute indicates the initial value of the attribute that will be modified during the animation.

The JavaScript exception "BigInt negative exponent" occurs when a BigInt is raised to the power of a negative BigInt value.

The JavaScript exception "invalid date" occurs when an invalid date is attempted to be converted to an ISO date string.

The pointsAtY attribute represents the y location in the coordinate system established by attribute primitiveUnits on the <filter> element of the point at which the light source is pointing.

The with() method of Temporal.PlainTime instances returns a new Temporal.PlainTime object representing this time with some fields replaced by new values. Because all Temporal objects are designed to be immutable, this method essentially functions as the setter for the time's fields.

The getTimeZoneTransition() method of Temporal.ZonedDateTime instances returns a Temporal.ZonedDateTime object representing the closest instant after or before this instant at which the time zone's UTC offset changes (the returned instant is the first instant after the change), or null if there is no such transition. This is useful for finding out the offset rules of a time zone, such as its daylight saving time pattern.

The toPlainDate() method of Temporal.PlainYearMonth instances returns a new Temporal.PlainDate object representing this year-month and a supplied day in the same calendar system.

The epochNanoseconds accessor property of Temporal.Instant instances returns a BigInt representing the number of nanoseconds elapsed since the Unix epoch (midnight at the beginning of January 1, 1970, UTC) to this instant.

The toLocaleString() method of Temporal.PlainMonthDay instances returns a string with a language-sensitive representation of this month-day. In implementations with Intl.DateTimeFormat API support, this method delegates to Intl.DateTimeFormat.