官术网_书友最值得收藏!

Chapter 2. Digging into the API

An Application Programming Interface (API) defines the operations, formats, and data structures available from a networked service. The developer writes code using the API to tell a server to accomplish a task. An API is built on top of an existing programming language, and uses the syntax and features of the language to make communications with a computer easier to code.

At one point, ESRI had three web-based APIs to communicate with ArcGIS Server: Flash, Silverlight, and JavaScript. With the rise of the mobile web and improvements in browsers, the ArcGIS JavaScript API won as the browser of choice. To make the best use of the ArcGIS Server map features, it's best to learn what's available from the JavaScript API. We're going to take a tour through the API, to become familiar with what it has to offer.

Unlike the other chapters in this book, this chapter provides more of a reference than a programming exercise. Short code snippets have been added to show how to use modules within the API. If you don't absorb every little crumb of information out of this chapter, don't worry. Just come back and reread parts of it for reference.

In this chapter, we'll learn about the following topics:

  • How maps are created and configured in the ArcGIS JavaScript API
  • How to display geographic data from ArcGIS Server through tiled, dynamic, and graphics layers
  • The building blocks of graphics on a map
  • How to communicate with ArcGIS Server services through tasks
  • How packaged UI controls called dijits can save development time

Note

For more information about the ArcGIS JavaScript API, including examples that you can build on your own, check out Building Web and Mobile ArcGIS Server Applications with JavaScript by Eric Pimpler or ArcGIS Web Development by Rene Rubalcava.

主站蜘蛛池模板: 留坝县| 乐平市| 玉龙| 冷水江市| 洞口县| 长丰县| 恭城| 临夏县| 缙云县| 筠连县| 安丘市| 彩票| 曲水县| 伊春市| 库尔勒市| 托克逊县| 凤山县| 肇东市| 洱源县| 黄石市| 崇礼县| 龙海市| 自贡市| 中卫市| 桂平市| 柏乡县| 武城县| 宕昌县| 延庆县| 阳原县| 阜宁县| 望奎县| 道真| 花莲市| 临西县| 浑源县| 德格县| 曲麻莱县| 巴林左旗| 广南县| 云梦县|