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Do you know the difference between host objects and native objects?

sobes.tech AI

Answer from AI

In the context of frontend and browser environments:

  • Host objects are objects provided by the runtime environment (e.g., the browser). These include objects like window, document, XMLHttpRequest, console, and others, which are implemented by the browser engine and interact with the external environment.

  • Native objects are built-in objects of the JavaScript language, defined by the ECMAScript specification. These include Array, Object, Function, String, Number, and others.

Example:

console.log(typeof window); // 'object' — host object
console.log(typeof Array);  // 'function' — native object

The main difference is that native objects are implemented by the language itself and are available in all JavaScript environments, whereas host objects depend on the specific environment (browser, Node.js, etc.) and provide additional interaction capabilities with the environment.