storage

מאפשר להרחבות לאחסן ולשלוף נתונים, ולהאזין לשינויים בפריטים המאוחסנים.

מערכת האחסון מבוססת על ממשק פיתוח היישומים Web Storage, עם מספר הבדלים. בין ההבדלים ניתן למצוא כי:

• היא אסינכרונית.
• הערכים הם בתוחם של ההרחבה, לא של מתחם כלשהו (כלומר. אותה קבוצה של זוגות מפתח/ערך זמינה לכל התסריטים בהקשר הרקע ובתסריטי התוכן).
• הערכים המאוחסנים יכולים להיות כל ערך הניתן לסריאליזציית , לא רק String. בין היתר, זה כולל: Array ו-Object, אך רק כשהתוכן שלהם יכול להיות מיוצג ב- JSON, שאינו כולל צמתי DOM. אין צורך בהסבת הערים למחרוזות JSON בטרם יאוחסנו, אך הם מיוצגים פנימית כערכי JSON, ולכן הדרישה כי יוכלו להיות מיוצגים בפורמט JSON.
• ניתן לקבוע ערכם של  זוגות מפתח/ערך מרובים יכולים  או לשלוף אותם באותה קריאה לממשק פיתוח היישומים.

To use this API you need to include the "storage" permission in your manifest.json file.

Each extension has its own storage area, which can be split into different types of storage.

Although this API is similar to Window.localStorage it is recommended that you don't use Window.localStorage in the extension code to store extension-related data. Firefox will clear data stored by extensions using the localStorage API in various scenarios where users clear their browsing history and data for privacy reasons, while data saved using the storage.local API will be correctly persisted in these scenarios.

You can examine the stored data under the Extension Storage item in the Storage Inspector tab of the developer toolbox, accessible from about:debugging.

Types

storage.StorageArea

An object representing a storage area.

storage.StorageChange

An object representing a change to a storage area.

Properties

storage has three properties, which represent the different types of available storage area.

storage.sync

Represents the sync storage area. Items in sync storage are synced by the browser, and are available across all instances of that browser that the user is logged into, across different devices.

storage.local

Represents the local storage area. Items in local storage are local to the machine the extension was installed on.

storage.managed

Represents the managed storage area. Items in managed storage are set by the domain administrator and are read-only for the extension. Trying to modify this namespace results in an error.

Events

storage.onChanged

Fired when one or more items change in a storage area.

Browser compatibility

Example extensions

• annotate-page
• favourite-colour
• forget-it
• navigation-stats
• proxy-blocker
• quicknote
• stored-credentials

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