JSONP 被用于跨域获取数据。在讲解它之前，先讲讲它与 JSON 之间的区别

成都创新互联公司是一家集网站制作、成都做网站、网站页面设计、网站优化SEO优化为一体的专业的建站公司，已为成都等多地近百家企业提供网站建设服务。追求良好的浏览体验,以探求精品塑造与理念升华,设计最适合用户的网站页面。 合作只是第一步，服务才是根本,我们始终坚持讲诚信，负责任的原则，为您进行细心、贴心、认真的服务,与众多客户在蓬勃发展的市场环境中,互促共生。

什么是JSON？

JSON 是一种基于文本的数据交换方式，或者叫做数据描述格式。

其优点是：

1、基于纯文本，跨平台传递极其简单；

2、Javascript 原生支持，后台语言几乎全部支持；

3、轻量级数据格式，占用字符数量极少，特别适合互联网传递；

4、可读性较强，虽然比不上 XML 那么一目了然，但在合理的依次缩进之后还是很容易识别的；

5、容易编写和解析，当然前提是你要知道数据结构；

JSON 的缺点当然也有，跨域无法获取数据，而 JSONP 的出现正好弥补了这一缺陷

什么是JSONP？

JSONP 是一种依靠开发人员的聪明才智创造出的一种非官方跨域数据交互协议，其本质就是 js 文件。

JSONP的客户端具体实现

• Web页面上调用js文件时不受是否跨域的影响（不仅如此，凡是拥有"src"这个属性的标签都拥有跨域的能力，比如
  基本 文件 流程 错误 SQL 调试

  1. 请求信息 : 2026-06-08 11:52:39 HTTP/1.1 GET : /article/dpoigi.html
  2. 运行时间 : 2.8562s ( Load:0.0067s Init:2.2223s Exec:0.6171s Template:0.0101s )
  3. 吞吐率 : 0.35req/s
  4. 内存开销 : 2,221.83 kb
  5. 查询信息 : 12 queries 5 writes
  6. 文件加载 : 36
  7. 缓存信息 : 0 gets 0 writes
  8. 配置加载 : 130
  9. 会话信息 : SESSION_ID=ktdofsttvu9tuavh770isu5tk1

  1. /www/wwwroot/tsicrk.com/index.php ( 1.09 KB )
  2. /www/wwwroot/tsicrk.com/ThinkPHP/ThinkPHP.php ( 4.61 KB )
  3. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Think.class.php ( 12.26 KB )
  4. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage.class.php ( 1.37 KB )
  5. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage/Driver/File.class.php ( 3.52 KB )
  6. /www/wwwroot/tsicrk.com/ThinkPHP/Mode/common.php ( 2.82 KB )
  7. /www/wwwroot/tsicrk.com/ThinkPHP/Common/functions.php ( 53.56 KB )
  8. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Hook.class.php ( 4.01 KB )
  9. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/App.class.php ( 13.49 KB )
  10. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Dispatcher.class.php ( 14.79 KB )
  11. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Route.class.php ( 13.36 KB )
  12. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Controller.class.php ( 11.23 KB )
  13. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/View.class.php ( 7.59 KB )
  14. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.68 KB )
  15. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ParseTemplateBehavior.class.php ( 3.88 KB )
  16. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ContentReplaceBehavior.class.php ( 1.91 KB )
  17. /www/wwwroot/tsicrk.com/ThinkPHP/Conf/convention.php ( 11.15 KB )
  18. /www/wwwroot/tsicrk.com/App/Common/Conf/config.php ( 2.14 KB )
  19. /www/wwwroot/tsicrk.com/ThinkPHP/Lang/zh-cn.php ( 2.55 KB )
  20. /www/wwwroot/tsicrk.com/ThinkPHP/Conf/debug.php ( 1.49 KB )
  21. /www/wwwroot/tsicrk.com/App/Home/Conf/config.php ( 0.31 KB )
  22. /www/wwwroot/tsicrk.com/App/Home/Common/function.php ( 3.33 KB )
  23. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior.class.php ( 5.62 KB )
  24. /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php ( 6.02 KB )
  25. /www/wwwroot/tsicrk.com/App/Home/Controller/CommController.class.php ( 1.60 KB )
  26. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Model.class.php ( 60.11 KB )
  27. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php ( 32.43 KB )
  28. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db/Driver/Pdo.class.php ( 16.74 KB )
  29. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache.class.php ( 3.83 KB )
  30. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php ( 5.87 KB )
  31. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template.class.php ( 28.16 KB )
  32. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php ( 22.40 KB )
  33. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib.class.php ( 9.16 KB )
  34. /www/wwwroot/tsicrk.com/App/Runtime/Cache/Home/7540f392f42b28b481b30614275e4e55.php ( 17.71 KB )
  35. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 0.97 KB )
  36. /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.24 KB )

  1. [ app_init ] --START--
  2. Run Behavior\BuildLiteBehavior [ RunTime:0.000006s ]
  3. [ app_init ] --END-- [ RunTime:0.000035s ]
  4. [ app_begin ] --START--
  5. Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000286s ]
  6. [ app_begin ] --END-- [ RunTime:0.000310s ]
  7. [ view_parse ] --START--
  8. [ template_filter ] --START--
  9. Run Behavior\ContentReplaceBehavior [ RunTime:0.000055s ]
  10. [ template_filter ] --END-- [ RunTime:0.000078s ]
  11. Run Behavior\ParseTemplateBehavior [ RunTime:0.007048s ]
  12. [ view_parse ] --END-- [ RunTime:0.007078s ]
  13. [ view_filter ] --START--
  14. Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000187s ]
  15. [ view_filter ] --END-- [ RunTime:0.000203s ]
  16. [ app_end ] --START--

  1. 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1 [ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
  2. 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1 [ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
  3. 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1 [ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( pid= )
  4. [8] Undefined index: pid /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php 第 47 行.
  5. [8] Undefined index: db_host /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 120 行.
  6. [8] Undefined index: db_port /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 121 行.
  7. [8] Undefined index: db_name /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 122 行.

  
  2.8562s