Learn how to Use Storage in Net Extensions

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Engaged on an online extension is an fascinating expertise — you get to style net whereas working with particular extension APIs. One such API is storage — the net extension taste of persistence. Let’s discover how you need to use session and native storage inside your Manifest V3 net extensions!

Enabling Extension Storage

The extension storage API is not accessible by default. To allow the storage API, it’s good to cite it within the manifest.json file of your extension:

{
  // extra....
  "manifest_version": 3,
  "identify": "__MSG_appName__",
  "permissions": [
    "storage",
    // more....
  ],
  // extra....
}

Including storage to the permissions array, which is a prime stage manifest.json key, gives session and native storage capabilities to your extension.

Get, Set, and Take away Storage Values

Very similar to conventional localStorage and sessionStorage APIs, extension storage gives get, set, and take away operations:

// set
await chrome.storage.session.set({ identify: "David", shade: "inexperienced" });

// get 
const { identify, shade } = await chrome.storage.session.get(["name", "color"]);

// take away
await chrome.storage.session.take away(["name", "color"]);

A couple of issues to notice:

  • get requires an array argument, not a single worth like localStorage and sessionStorage
  • set must be an object format
  • take away can also be an array, very like get
  • You should utilize chrome.storage.native or chrome.storage.session relying on how
  • The entire extension storage API strategies are promise-based, with await or callback codecs

Clear All Storage

Within the occasion that you just need to clear all information for native or session storage, there is a clear technique:

await chrome.storage.session.clear();

Utilizing clear is efficient however you may need to ensure that you do actually need to clear every part — clear may develop into a upkeep difficulty.

Storage is a necessary a part of most net extensions. Whereas the API is easy, the async format and technique names are totally different.


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