Is it possible to add additional text to the tab title?

Is it possible for my extension to add a small text tag like "(Recorded!)" at the end of tab titles to show the user that a particular tab has been viewed? The code below appears to be functioning correctly in the debugger, indicating that tab.title is updated with "(Recorded!)", but the title in chrome itself remains unchanged. Should I be refreshing the tab programmatically to see the new title? If so, how can I do this without triggering the onUpdated listener again? Or if not, what would you suggest as an alternative approach?

// Retrieve the title of the updated tab and add "NYTimes.com" in order to increment count
chrome.tabs.onUpdated.addListener(function(url, changeInfo, Tab)
{
    chrome.tabs.getSelected(null, function(tab) 
    {
        var title = tab.title;

        if (title.indexOf("NYTimes.com") != -1 && changeInfo.status == "complete")
        {
            tab.title = title + ' (Recorded!)';
            localStorage.setItem('nyt', ++nytCount);
        }
    });
});

Answer №1

In order to achieve this task, it is necessary to utilize a content script. The chrome.tabs API solely offers read-only access to information about tabs.

It appears that programmatically injecting code (https://developer.chrome.com/trunk/extensions/content_scripts.html#pi) would be appropriate for your situation.

Due to the fact that content scripts operate in an isolated environment (https://developer.chrome.com/trunk/extensions/content_scripts.html#execution-environment), you will need to insert <script> into the page and manipulate the title by assigning document.title within it.

Below is an example of how this can be achieved (remember to replace

tab.title = title + ' (Recorded!)';
):

chrome.tabs.executeScript(tab.id, {code: 
    "var script = document.createElement('script');" + 
    "script.appendChild(document.createTextNode('" +
    "document.title = document.title + \" (Recoorded!)\";" + 
    "'));" + 
    "document.body.appendChild(script);"});

Answer №2

Utilizing jquery proved to be extremely effective in my case.

var title = $(document).prop('title'); 
if (title.indexOf('new prefix') == -1) {
    $(document).prop('title', 'new prefix - '+title);
}

Just ensure that it is included in the content scripts section of manifest.json

"content_scripts": [ {
  "js": [ "jquery-3.1.0.min.js", "myscript.js" ],
  "matches": [ "http://*/*", "https://*/*" ]
}]

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