Report: State of JavaScript

JavaScript powers the modern web, enabling rich and interactive web applications. In this report we dive into how JavaScript is used on the web, and its adoption and trends both for mobile and desktop experiences.

JavaScript Bytes

The sum of transfer size kilobytes of all external scripts requested by the page. An external script is identified as a resource with the js or json file extensions or a MIME type containing script or json.

See also: Page Weight

JavaScript Requests

The number of external scripts requested by the page. An external script is identified as a resource with the js or json file extensions or a MIME type containing script or json.

See also: Page Weight