Using IndexedDB to save images

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甜味超标
甜味超标 2021-02-20 07:10

Would like to save image with indexedDB in database named Images on button click.

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  •  不知归路
    2021-02-20 07:48

    General idea is:

    1. Create a database with a specified name. Use indexedDB.open() for that.
    2. Create an objectStore.
    3. Read a file(image in your case) as blob. Use XMLHttpRequest for that.
    4. Create a db transaction.
    5. Save file blob in th DB.
    6. Read file blob from database.
    7. Create URL using URL.createObjectURL() function
    8. Insert url in src attribute in an image tag.

    See more: https://hacks.mozilla.org/2012/02/storing-images-and-files-in-indexeddb/

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