Ecma 262

This document summarizes the third edition of the ECMA-262 standard, which specifies the ECMAScript language. It provides a brief history of ECMAScript, which originated from JavaScript and JScript. The standard was adopted by ECMA International in December 1999 and defines features like regular expressions, string handling, control statements, exception handling, and error definitions for the ECMAScript language. Work continues on enhancing ECMAScript, including mechanisms for cross-browser scripting and coordination with other standards bodies. The document outlines the standard's scope, references, language overview, notational conventions, lexical conventions, types, type conversion, execution contexts, and expressions.