The Map() constructor creates Map objects.

# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/javascript/reference/operators/in/index.md # Original Wiki contributors HiEv bodaz fscholz Zearin_Galaur...

The Temporal.Instant.fromEpochNanoseconds() static method creates a new Temporal.Instant object from the number of nanoseconds since the Unix epoch (midnight at the beginning of January 1, 1970, UTC).

The Temporal.PlainDateTime.from() static method creates a new Temporal.PlainDateTime object from another Temporal.PlainDateTime object, an object with date and time properties, or an RFC 9557 string.

The with() method of Temporal.PlainYearMonth instances returns a new Temporal.PlainYearMonth object representing this year-month 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 year-month's fields.

# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/svg/tutorials/svg_from_scratch/getting_started/index.md # Original Wiki contributors mfuji09 chrisdavidm...

The JavaScript exception "repeat count must be less than infinity" occurs when the String.prototype.repeat() method is used with a count argument that is infinity.

# Contributors by commit history https://github.com/mdn/content/commits/main/files/en-us/web/svg/reference/element/lineargradient/index.md # Original Wiki contributors anastasialanz Jeremie fscholz...

In this example, we use XHTML, SVG, JavaScript, and the DOM to animate a swarm of "motes". These motes are governed by two basic principles. First, each mote tries to move towards the mouse cursor, and second each mote tries to move away from the average mote position. Combined, we get this very natural-looking behavior.

The JavaScript exception "redeclaration of formal parameter" occurs when the same variable name occurs as a function parameter and is then redeclared using a let assignment in a function body again.