1. Web
  2. Web APIs
  3. CacheStorage
  4. open()

CacheStorage: open() method

Baseline
Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2018.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The open() method of the CacheStorage interface returns a Promise that resolves to the Cache object matching the cacheName.

You can access CacheStorage through the Window.caches property in windows or through the WorkerGlobalScope.caches property in workers.

Note: If the specified Cache does not exist, a new cache is created with that cacheName and a Promise that resolves to this new Cache object is returned.