What is the scope of a service worker, and how can it be controlled?

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Scope of a Service Worker The scope of a service worker defines the set of pages (URLs) and requests it can control. By default, the scope is limited to the directory of the service worker file and all subdirectories.For example: If you register /sw.js, it will control / and everything under it.If you register /scripts/sw.js, it will control /scripts/ and all subpaths. How to Control Scope When registering the service worker in JavaScript, you can explicitly set its scope using the scope option: Here: /sw.js is the service worker file.scope: '/app/' means it will only control URLs starting with /app/. Rules & Limitations Same-origin rule: The scope must be within the same origin as the service worker file. You can’t register a service worker to control another domain or higher-level path than where it is served from. Default scope: If you don’t specify scope, it defaults to the worker file’s directory and below.Max scope: The scope cannot be broader than the service worker file’s path.Example: If sw.js is at /app/sw.js, it cannot control / (the root).Multiple workers: Different service workers can be registered for different scopes on the same origin. Summary: Scope = which URLs the service worker controls.Default = its directory + subdirectories.Controlled by scope option in register().Restricted by origin and path rules.

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What is the scope of a service worker, and how can it be controlled?

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Scope of a Service Worker

How to Control Scope

Rules & Limitations