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All Projects → tjuking → performance-timing

tjuking / performance-timing

Licence: other
performance-timing.js利用HTML5的navigation timing API进行前端性能数据采集，是性能监控平台搭建的利器

Programming Languages

javascript
184084 projects - #8 most used programming language

Labels

performanceperformance-analysisnavigation-timing

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performance-timing

performance-timing.js利用HTML5中的navigation timing API进行前端性能数据采集，是性能监控平台搭建的利器

浏览器兼容性

请参考：http://caniuse.com/#feat=nav-timing

依赖

目前依赖jQuery，如果不希望依赖jQuery可以自己去实现函数$.param和$.extend

优势

  • 浏览器原生支持，准确性高
  • 能够获取到更多的数据，例如DNS解析时间、重定向时间等
  • 支持页面首次渲染时间的采集
  • 代码量少（百行左右）
  • 可定制化程度高
  • 支持抽样
  • 支持在网页加载完成后进行数据采集和发送，减少页面的性能损耗

使用示例

    //支持 AMD 和 CMD，下面代码使用的是全局变量的方式
    Performance.start({
        url: "http://www.xxx.com/a.gif", //后端收集数据的URL，必填
        rate: 0.2, //抽样比例，默认是10%抽样
        data: { //额外需要记录的数据，非必填
            ext_domain: "www.xxx.com", //域名，默认是document.domain
            ext_path: "_wap_index" //页面，默认是encodeURIComponent(location.pathname.toLowerCase().replace(/\//g, "_"));
        }
    });

采集的数据说明

默认情况下脚本将会采集以下数据（详细计算公式可参看采集脚本）：

参数 类型 描述
ext_domain string 域名
ext_path string 页面
t_unload number 上个文档的卸载时间
t_redirect number 页面重定向的时间
t_dns number DNS解析时间
t_tcp number 服务器连接时间
t_request number 服务器响应时间
t_response number 网页文档下载时间
t_paint number 首次渲染时间
t_dom number DOM Ready时间（阶段）
t_domready number DOM Ready时间（总和）
t_load number onload时间（阶段）
t_onload number onload时间（总和）
t_white number 白屏时间
t_all number 全部过程时间

注意事项

  • 后端利用数据进行统计时，需要排除值为0的项，避免某些不准确的数据或者未采集到的数据对性能指标产生影响
  • 用户IP以及浏览器识别的数据可以放到后端进行采集
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