Baseline Widely available
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 delete() method of the CacheStorage interface finds the Cache object matching the cacheName, and if found, deletes the Cache object and returns a Promise that resolves to true. If no Cache object is found, it resolves to false.
You can access CacheStorage through the Window.caches property in windows or through the WorkerGlobalScope.caches property in workers.
cacheName
The name of the cache you want to delete.
a Promise that resolves to true if the Cache object is found and deleted, and false otherwise.
In this code snippet we wait for an activate event, and then run a waitUntil() block that clears up any old, unused caches before a new service worker is activated. Here we have an array of cache names we want to keep (cachesToKeep). We return the keys of the caches in the CacheStorage object using CacheStorage.keys, then check each key to see if it is in the array. If not, we delete it using delete().
this.addEventListener("activate", (event) => {
const cachesToKeep = ["v2"];
event.waitUntil(
caches.keys().then((keyList) =>
Promise.all(
keyList.map((key) => {
if (!cachesToKeep.includes(key)) {
return caches.delete(key);
}
return undefined;
}),
),
),
);
});
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4