Information Technology Reference
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to the web server through this alternate method. For an example of this, we only need to
visit Google's search engine on our phone. We start with a blank search page, as in
Figure 12-1.
Figure 12-1.
The Google search home page
Now say it's early in the morning and I want to start my day listening to a great song set
to a bunch of pictures of the events the song is discussing. I might begin to type in the
name of the song, as in Figure 12-2, and while I do that, Google is using asynchronous
calls to try to figure out what I'm looking for. As I type, it's checking each letter against a
central database, without requiring me to refresh the page. It's then showing these
suggestions below the search bar.
