How you can Use Storage in Net Extensions

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

Enabling Extension Storage

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

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

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

Get, Set, and Take away Storage Values

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

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

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

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

A number 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 need to use chrome.storage.native or chrome.storage.session relying on how
  • All the 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 methodology:

await chrome.storage.session.clear();

Utilizing clear is efficient however you may need to make certain that you do really need to clear all the things — clear may turn into a upkeep problem.

Storage is a vital a part of most internet extensions. Whereas the API is easy, the async format and methodology names are totally different.


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