JavaScript () is a
high-level,
dynamic,
untyped, and
interpreted programming language. It has been standardized in the
ECMAScript language specification. Alongside
HTML and
CSS, it is one of the three essential technologies of
World Wide Web content production; the majority of
websites employ it and it is supported by all modern
Web browsers without
plug-ins. JavaScript is
prototype-based with
first-class functions, making it a
multi-paradigm language, supporting
object-oriented,
imperative, and
functional programming styles. It has an
API for working with text,
arrays, dates and
regular expressions, but does not include any
I/O, such as networking, storage, or graphics facilities, relying for these upon the host environment in which it is embedded.
