October 2006
Beginner to intermediate
352 pages
9h 33m
English
Content preview from Learning JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Google Maps
One of the most famous Ajax/DHTML/JavaScript applications is Google Maps. It became even more popular when the company released an API that enabled people to quickly and easily add sophisticated mapping to their web pages. This one application, more so than probably any other, is what fires the imagination regarding Ajax and the ability to mix and mash technologies.
It’s not unusual for people to record the longitude and latitude of a photograph’s location into that photo (a process known as geocoding), which is then parsed out and passed to a Google Maps API call. A map is then created to show exactly where the photo was taken.
Geocachers, that group of passionate global positioning satellite (GPS) users, utilize Google Maps to mark geocaches (hidden objects of little or no value used as a way to mark the spot). Others use Google Maps to provide driving directions, to mark landmarks, or even play games. It’s a rich and easy-to-use API.
To use Google Maps, you first need a free API key, which you can
get at the Google Maps API web site (http://www.google.com/apis/maps/). This is used
as part of the URL given in the src
attribute of the script tag. For instance, the following shows how I use
my key for learningjavascript.info:
<script src="http://maps.google.com/maps?file=api&v=2& key=ABQIAAAAprpnCG3LM_SOd5dAqo4g7RThwcj_1x2ShM2_WlFws98yyiZZxRQyUhBJw9Ty1j6jpEUo_v6PFZfJdQ" type="text/javascript"></script>
That key has to match the exact domain and subdirectory location ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.