JavaScript Introduction
JavaScript is a programming language that was first released in 1995.
Despite its name, JavaScript actually has nothing to do with the
Java programming language.
JavaScript has several notable features:
- Javascript is a scripting language.
JavaScript programs are scripts that are read and executed by an interpreter.
- JavaScript's basic syntax and structure borrow heavily from C.
- JavaScript differs from most object-oriented languages,
though, in that its inheritance model is prototype-based rather than class-based.
- JavaScript functions are objects and
have their own properties and methods. The functions in Javascript
can be passed into other functions as parameters or
returned from other functions and assigned to variables.
- JavaScript variables are not type-checked at interpretation
time, and how operations occur between operands of
mixed types depends on specific rules within JavaScript.
- JavaScript is an implementation of the ECMA-262 standard.