现在很多网站使用了JavaScript，它让交互响应更加灵敏，也增强了所谓的“用户体验”。尽管它是一门很简单的程序设计语言，但由于现在Web应用程序越来越多，JavaScript的地位也变得越来越重要。不过，在享受JavaScript和衍生的库的同时，你想过如果没有JavaScript，你现在的网页看起来是什么样子？

我的博客使用了jQuery的一些功能，显然它是基于JavaScript的。我关掉了浏览器的JavaScript引擎，打开博客，幸好没有变形——广告无法显示，这不是我能控制的。

“文章”菜单不能显示，因为我是通过jQuery注册hover事件实现弹出的；“回顶部”的按钮也无效了，当然这影响不大。

在完成应用JavaScript之前（或者之后？），我们应该思考一下如何聪明地使用JavaScript ，从而确保不会因为它的缘故使任何人无法访问你的网站。这就是非干扰性的JavaScript背后的核心理念。

为了更好地理解什么是非干扰性JavaScript 以及我们为什么需要它，我们先来看看在JavaScript 程序设计中会碰到哪些不确定性因素：

◆因为某些浏览器不支持JavaScript 或它们的支持的JavaScript 版本太老了，这些浏览器可能会完全忽略你的脚本；

◆即使一个浏览器可以支持JavaScript ，用户们也可能会出于安全性的考虑而禁用 JavaScript ，用户所在公司的防火墙也可能会通过移除所有的

基本 文件 流程 错误 SQL 调试

1. 请求信息 : 2026-02-17 00:30:06 HTTP/1.1 GET : /article/cooeodp.html
2. 运行时间 : 0.0623s ( Load:0.0033s Init:0.0005s Exec:0.0543s Template:0.0042s )
3. 吞吐率 : 16.05req/s
4. 内存开销 : 2,213.59 kb
5. 查询信息 : 12 queries 5 writes
6. 文件加载 : 36
7. 缓存信息 : 0 gets 2 writes
8. 配置加载 : 130
9. 会话信息 : SESSION_ID=6c7gpov1eqrvpkko9n109v5rq1

1. /home/wwwroot/jxjierui.cn/index.php ( 1.12 KB )
2. /home/wwwroot/jxjierui.cn/ThinkPHP/ThinkPHP.php ( 4.61 KB )
3. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Think.class.php ( 12.26 KB )
4. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Storage.class.php ( 1.37 KB )
5. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Storage/Driver/File.class.php ( 3.52 KB )
6. /home/wwwroot/jxjierui.cn/ThinkPHP/Mode/common.php ( 2.82 KB )
7. /home/wwwroot/jxjierui.cn/ThinkPHP/Common/functions.php ( 53.56 KB )
8. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Hook.class.php ( 4.01 KB )
9. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/App.class.php ( 13.49 KB )
10. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Dispatcher.class.php ( 14.79 KB )
11. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Route.class.php ( 13.36 KB )
12. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Controller.class.php ( 11.23 KB )
13. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/View.class.php ( 7.59 KB )
14. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.68 KB )
15. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/ParseTemplateBehavior.class.php ( 3.88 KB )
16. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/ContentReplaceBehavior.class.php ( 1.91 KB )
17. /home/wwwroot/jxjierui.cn/ThinkPHP/Conf/convention.php ( 11.15 KB )
18. /home/wwwroot/jxjierui.cn/App/Common/Conf/config.php ( 2.12 KB )
19. /home/wwwroot/jxjierui.cn/ThinkPHP/Lang/zh-cn.php ( 2.55 KB )
20. /home/wwwroot/jxjierui.cn/ThinkPHP/Conf/debug.php ( 1.48 KB )
21. /home/wwwroot/jxjierui.cn/App/Home/Conf/config.php ( 0.32 KB )
22. /home/wwwroot/jxjierui.cn/App/Home/Common/function.php ( 3.33 KB )
23. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior.class.php ( 5.62 KB )
24. /home/wwwroot/jxjierui.cn/App/Home/Controller/ArticleController.class.php ( 6.11 KB )
25. /home/wwwroot/jxjierui.cn/App/Home/Controller/CommController.class.php ( 1.60 KB )
26. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Model.class.php ( 60.11 KB )
27. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Db.class.php ( 32.43 KB )
28. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Db/Driver/Pdo.class.php ( 16.74 KB )
29. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Cache.class.php ( 3.83 KB )
30. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Cache/Driver/File.class.php ( 5.87 KB )
31. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Template.class.php ( 28.16 KB )
32. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php ( 22.40 KB )
33. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Template/TagLib.class.php ( 9.16 KB )
34. /home/wwwroot/jxjierui.cn/App/Runtime/Cache/Home/7540f392f42b28b481b30614275e4e55.php ( 13.96 KB )
35. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 0.97 KB )
36. /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.24 KB )

1. [ app_init ] --START--
2. Run Behavior\BuildLiteBehavior [ RunTime:0.000004s ]
3. [ app_init ] --END-- [ RunTime:0.000023s ]
4. [ app_begin ] --START--
5. Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000136s ]
6. [ app_begin ] --END-- [ RunTime:0.000148s ]
7. [ view_parse ] --START--
8. [ template_filter ] --START--
9. Run Behavior\ContentReplaceBehavior [ RunTime:0.000049s ]
10. [ template_filter ] --END-- [ RunTime:0.000074s ]
11. Run Behavior\ParseTemplateBehavior [ RunTime:0.003308s ]
12. [ view_parse ] --END-- [ RunTime:0.003321s ]
13. [ view_filter ] --START--
14. Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000061s ]
15. [ view_filter ] --END-- [ RunTime:0.000070s ]
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 /home/wwwroot/jxjierui.cn/App/Home/Controller/ArticleController.class.php 第 47 行.
5. [2] file_put_contents(./App/Runtime/Temp/70a7381ded4dc8e7252e0dd800044973.php): failed to open stream: Permission denied /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 132 行.
6. [8] Undefined index: db_host /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Db.class.php 第 120 行.
7. [8] Undefined index: db_port /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Db.class.php 第 121 行.
8. [8] Undefined index: db_name /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Db.class.php 第 122 行.
9. [2] file_put_contents(./App/Runtime/Temp/31ccc249421518ff0fb388afcff47762.php): failed to open stream: Permission denied /home/wwwroot/jxjierui.cn/ThinkPHP/Library/Think/Cache/Driver/File.class.php 第 132 行.

0.0623s