How to Retrieve a Value from chrome.storage.sync.get in Your Chrome Extension

Learn step-by-step how to effectively use `chrome.storage.sync.get` to retrieve values in your Chrome extension development.
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This video is based on the question stackoverflow.com/q/66822132/ asked by the user 'allancoding' ( stackoverflow.com/u/13707878/ ) and on the answer stackoverflow.com/a/66822355/ provided by the user 'allancoding' ( stackoverflow.com/u/13707878/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Retrieve a Value from chrome.storage.sync.get in Your Chrome Extension

When developing Chrome extensions, managing data across sessions and devices is crucial. One common way to store these values is by using chrome.storage.sync. However, understanding how to effectively retrieve these values can be challenging. In this post, we will walk through the process of setting and retrieving values using chrome.storage.sync.get, helping you efficiently manage data in your extension.

The Problem

You've set a value in chrome.storage.sync using the following code snippet:

[[See Video to Reveal this Text or Code Snippet]]

After executing this code, you notice that you successfully stored a value for the domain. For instance, a response value might look like this:

[[See Video to Reveal this Text or Code Snippet]]

Now you're looking to retrieve this stored value and assign it to a variable for further use. The current retrieval method is using:

[[See Video to Reveal this Text or Code Snippet]]

However, you need a more suitable way to access this data and assign it to a variable. How can you achieve that?

The Solution

Accessing the Retrieved Value

To access the value from the retrieved object, you can derive its content using the following approach. After your call to chrome.storage.sync.get, you can use the domain key to extract the value from the response. Here's how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Code

Variable Initialization:

The variable foo is used to store the extracted value.

Accessing reee:

The reee variable contains the object that you retrieved from chrome.storage.sync.get. By indexing into reee with the specific key (in this case, the domain stackoverflow.com (type)), you can access the desired value.

Result

After executing the above code, the variable foo will now contain the formatted string:

[[See Video to Reveal this Text or Code Snippet]]

This provides an easy way to manipulate the retrieved value in your extension. From here, you can parse it into an object, modify it, or use it as needed in your application.

Conclusion

Retrieving values stored in chrome.storage.sync is essential for Chrome extension development. By utilizing the chrome.storage.sync.get method smartly and extracting values using the variable initialized with the key, you can efficiently access and manage your data.

Now, you're equipped to handle data with ease in your Chrome extensions. For further exploration, consider handling errors in the retrieval process or implementing data validation to ensure your data integrity within your extension.

If you have any questions or need further clarification, feel free to ask. Happy coding!