Window: caches property

The caches read-only property of the Window interface returns the CacheStorage object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests.

Value

A CacheStorage object.

Examples

The following example shows how a window can retrieve cached data.

caches.open("v1").then((cache) => cache.match("/list"));

HTTP: Hypertext Transfer Protocol

HTTP guides

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Browser detection using the user agent string (UA sniffing)

HTTP caching

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Reason: CORS header 'Access-Control-Allow-Origin' does not match 'xyz

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Reason: CORS request external redirect not allowed

Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Headers

Reason: invalid token 'xyz' in CORS header 'Access-Control-Allow-Methods

Reason: Did not find method in CORS header 'Access-Control-Allow-Methods

Reason: expected 'true' in CORS header 'Access-Control-Allow-Credentials

Reason: missing token 'xyz' in CORS header 'Access-Control-Allow-Headers' from CORS preflight channel

Reason: CORS header 'Access-Control-Allow-Origin' missing

Reason: Multiple CORS header 'Access-Control-Allow-Origin' not allowed

Reason: Credential is not supported if the CORS header 'Access-Control-Allow-Origin' is '*

Reason: CORS header 'Origin' cannot be added

Reason: CORS preflight channel did not succeed

Reason: CORS request not HTTP

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Content Security Policy: The page's settings blocked the loading of a resource: xyz

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A typical HTTP session

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Accept header

Accept-CH header

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Accept-Language header

Accept-Patch header

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Accept-Ranges header

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Access-Control-Request-Method header

Activate-Storage-Access header

Age header

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Attribution-Reporting-Eligible header

Attribution-Reporting-Register-Source header

Attribution-Reporting-Register-Trigger header

Authorization header

Available-Dictionary header

Cache-Control header

Clear-Site-Data header

Connection header