When viewing a torrent page, the title of the tab is:
Bitsoup.org The Best site for your Torrent appetite :: Details for torrent "ABC"
where "ABC" is the name of the torrent file.
Unfortunately, when I have 3+ tabs open, I can not see what the name of the torrent file is.
I am attempting to create a Greasemonkey script to truncate, or split, the title, so that it only displays the torrent-name, and not the beginning part.
I am aware that you can modify the title associated with a page by using document.title = ...
but I am unsure of what to assign it to.
You could use a regular expression, perhaps:
document.title = document.title.match(/"([^"]+)"/)[1]
This regex uses grouping to matches the first thing that is between quotes, and assigns it to the title (without the quotes).
Using a substr method is by far the simplest if you know that the beginning of the title will always be identical. For example, with the title you gave:
document.title = document.title.substr(76);
If it is not a static title, then RegEx would be the next most logical route. To match the last set of quotes and ignore potential whitespace:
document.title = document.title.match(/"([^"]+)"\s*$/)[1];
来源：https://stackoverflow.com/questions/11253058/how-can-i-modify-the-title-of-a-site-using-javascript