17. Bookmarklets
You know that JavaScript can be used to control Web browsers from inside your Web pages. However, you can also use JavaScript to control your browser without using Web pages, by using what are called bookmarklets. Bookmarklets are bookmarks (or favorites, if you prefer Internet Explorer’s terminology; sometimes bookmarklets are called favelets) that contain a call to the browser’s JavaScript interpreter, instead of an external URL. The JavaScript in your bookmarklets can do anything from getting details about images, to giving you the definition of a word, to resizing your browser window. And because you know JavaScript, this functionality is easy to add to make your browser a smarter, better tool.
Bookmarklets differ from other ...
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