ECMAScript Specification

The ECMAScript Specification is a detailed set of rules and standards that define how the JavaScript programming language works. It ensures consistency and predictability in how code is written and executed across different environments, like browsers and servers. Think of it as a blueprint that guides developers and engine creators, making sure everyone follows the same fundamental principles. This helps JavaScript programs run reliably everywhere, and allows developers to write code with confidence that it will behave as intended wherever it is used.