本国际标准定义了包含ECMAScript编程语言及其必需和可选内置库的ECMAScript规范套件。它定义了实施这套标准所需的所有必要组件（包括规范性组件和信息性组件）。如果一个或多个组件由新的标准版本更新，则此套件不会更改。只有在添加新组件和/或从中删除旧组件时，套件才会更改。

This International Standard defines the ECMAScript Specification Suite containing the ECMAScript programming language and its required and optional built-in libraries. It defines all the necessary components (both normative and informative) that is needed to implement this suite of standards. This suite does not change if one or more components are updated by a new standard edition. The Suite changes only when new components are added and / or old components are removed from it.