Acquiring the Facebook profile_id and incorporating it into a URL using a Chrome Extension

Although I have limited knowledge of JavaScript, I believe I know enough to complete the task at hand; I just need some guidance.

I am working on developing an extension that will extract the profile_id from the current Facebook page being viewed, and then insert it into a URL in order to display a new page. For example, profileid/photos-of

My main hurdle is finding relevant documentation on how to achieve this. While displaying the new page isn't a problem, extracting the ID from the page requires more advanced JavaScript skills than I currently possess. After conducting research, all signs point towards utilizing the Facebook Graph API, but I am unsure of where to obtain it or how to utilize it effectively. Any tips or recommendations for tutorials aimed at beginners would be greatly appreciated, as my experience with JavaScript and the Graph API is fairly limited.

javascriptfacebookfacebook-graph-apigoogle-chrome-extension

Answer №1

If you want to find a profile ID without using the Graph API, simply open any page source in your developer tools (F12) and search for the relevant information. Look for the profile ID in an easily accessible spot, such as:

<meta property="al:android:url" content="fb://page/123456789012345">

You can extract this information using the following code in a content script:

document.querySelector('meta[property="al:android:url"]').content

To create an extension, make sure to have an event page that listens for the browser toolbar button:

chrome.browserAction.onClicked.addListener(function(tab) {
    chrome.tabs.executeScript(
        tab.id,
        {code: "document.querySelector('meta[property=\"al:android:url\"]').content"},
        function(results) {
            var profileID = results[0].split('/')[3];
            chrome.tabs.create({
                url: 'https://www.facebook.com/search/' + profileID + '/photos-of',
                active: true
            });
        }
    );
});

Also, ensure that your manifest.json file includes the necessary "activeTab" permission.

Remember, there is always room for improvement in the provided code. Explore official sample extensions and consult the documentation and API reference. Don't forget to use the debugger for troubleshooting (tutorial, how to debug background/event pages)!

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