JavaScript总结几个提高性能知识点(推荐)
前段时间花时间看了大半的《High Performance JavaScript》这本书啊,然后就开始忙项目了,庆幸最忙的一周已经熬过去了。由于空不出时间,这个月写的学习笔记也不多,忙完最苦X的一周,这两天晚上也算是挑灯夜读了...终于是在残血之际将这本书shut down了...

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既然读完了,总归是要学到些什么的。说说对这本书的看法先吧,整体的来说,内容还是不错的,就是感觉有点老了(作为前端小白,也可能是自身水平有限,未能体会到其中真意)。看这本书的过程中也是写了挺多代码用以测试的,并且对本书提倡的写法和原先大众的写法的执行分别进行了断点跟踪,对于能实际测出的问题进行理解,当然,下断点跟着执行也看不出的那也没办法咯。对于书中的知识点,这里只是简单的整理出个人所推崇的一部分,当然~ 不喜勿喷。
针对js文件的加载位置
在HTML文件中,
基本
文件
流程
错误
SQL
调试
- 请求信息 : 2026-05-20 18:02:21 HTTP/1.1 GET : /article/jghhcd.html
- 运行时间 : 0.7841s ( Load:0.0082s Init:0.1354s Exec:0.6308s Template:0.0097s )
- 吞吐率 : 1.28req/s
- 内存开销 : 2,238.18 kb
- 查询信息 : 12 queries 5 writes
- 文件加载 : 36
- 缓存信息 : 0 gets 0 writes
- 配置加载 : 130
- 会话信息 : SESSION_ID=arfq134dla1735nb617amu3770
- /www/wwwroot/tsicrk.com/index.php ( 1.09 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/ThinkPHP.php ( 4.61 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Think.class.php ( 12.26 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage.class.php ( 1.37 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage/Driver/File.class.php ( 3.52 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Mode/common.php ( 2.82 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Common/functions.php ( 53.56 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Hook.class.php ( 4.01 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/App.class.php ( 13.49 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Dispatcher.class.php ( 14.79 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Route.class.php ( 13.36 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Controller.class.php ( 11.23 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/View.class.php ( 7.59 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.68 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ParseTemplateBehavior.class.php ( 3.88 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ContentReplaceBehavior.class.php ( 1.91 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Conf/convention.php ( 11.15 KB )
- /www/wwwroot/tsicrk.com/App/Common/Conf/config.php ( 2.14 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Lang/zh-cn.php ( 2.55 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Conf/debug.php ( 1.49 KB )
- /www/wwwroot/tsicrk.com/App/Home/Conf/config.php ( 0.31 KB )
- /www/wwwroot/tsicrk.com/App/Home/Common/function.php ( 3.33 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior.class.php ( 5.62 KB )
- /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php ( 6.02 KB )
- /www/wwwroot/tsicrk.com/App/Home/Controller/CommController.class.php ( 1.60 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Model.class.php ( 60.11 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php ( 32.43 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db/Driver/Pdo.class.php ( 16.74 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache.class.php ( 3.83 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php ( 5.87 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template.class.php ( 28.16 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php ( 22.40 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib.class.php ( 9.16 KB )
- /www/wwwroot/tsicrk.com/App/Runtime/Cache/Home/7540f392f42b28b481b30614275e4e55.php ( 17.71 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 0.97 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.24 KB )
- [ app_init ] --START--
- Run Behavior\BuildLiteBehavior [ RunTime:0.000007s ]
- [ app_init ] --END-- [ RunTime:0.000038s ]
- [ app_begin ] --START--
- Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000301s ]
- [ app_begin ] --END-- [ RunTime:0.000327s ]
- [ view_parse ] --START--
- [ template_filter ] --START--
- Run Behavior\ContentReplaceBehavior [ RunTime:0.000067s ]
- [ template_filter ] --END-- [ RunTime:0.000089s ]
- Run Behavior\ParseTemplateBehavior [ RunTime:0.006614s ]
- [ view_parse ] --END-- [ RunTime:0.006641s ]
- [ view_filter ] --START--
- Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000163s ]
- [ view_filter ] --END-- [ RunTime:0.000181s ]
- [ app_end ] --START--
- 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
- 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
- 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= )
- [8] Undefined index: pid /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php 第 47 行.
- [8] Undefined index: db_host /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 120 行.
- [8] Undefined index: db_port /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 121 行.
- [8] Undefined index: db_name /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 122 行.

0.7841s
