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@mitojs/web-performance

v2.1.18

Published

A SDK For Report Web Performance

Downloads

5

Readme

性能监控

安装

使用npm

npm i @mitojs/web-performance

使用yarn

yarn add @mitojs/web-performance

使用cdn

<script src="https://cdn.jsdelivr.net/npm/@mitojs/web/dist/web-performance.min.js"></script>

快速开始

 let wv = new MITO.WebVitals({
    appId: 'allen-test',
    version: '1.0.0',
    reportCallback: console.log,
    immediately: true,
    customPaintMetrics: 'custom-finish-paint'
  })

API

  • constructor

    属性|类型|描述|是否必填|默认值 |---|---|---|---|---| appId|string|应用标识|否|无 version|string|应用版本号|否|无 reportCallback|上报回调函数|function|是|无 reportUri|string|提供给sendBeacon使用|否|无 immediately|boolean|是否立即上报|否|false customPaintMetrics|string|自定义完成渲染指标|否|无

  • getCurrentMetrics

    返回当前所有指标的对象,指标名称:navigation-timing、first-paint、first-contentful-paint、largest-contentful-paint、first-input-delay、resource-flow、fps, 自定义指标返回 {customMetrics}Metrics

  • setStartMark

    描述:自定义开始标志,用于测量自定义指标

    参数|类型|描述 |---|---|---| markName|string|标记名

  • setEndMark

    描述:自定义结束标志,用于测量自定义指标,返回当前自定义指标数据,并清除当前标志

    参数|类型|描述 |---|---|---| markName|string|标记名

  • clearMark

    描述:清除当前已定义的标志

    参数|类型|描述 |---|---|---| markName|string|标记名

  • customCompletedPaint

    描述:测量自定义渲染的指标,返回自定义渲染指标数据,配合customPaintMetrics 属性,一起使用

指标

NavigationTiming

字段|字段类型|描述|计算公式|备注 |---|----|----|------|---| dnsLookup|number|DNS查询耗时| domainLookupEnd - domainLookupStart initial connection|number|TCP连接耗时|connectEnd - connectStart SSL|number|SSL安全连接耗时| connectEnd - secureConnectionStart|只在HTTPS下有效。 ttfb|number|请求响应耗时|responseStart - requestStart|https://developer.chrome.com/docs/devtools/network/reference/#timing content download|number|内容传输耗时|responseEnd - responseStart dom parse|number|DOM解析耗时|domInteractive - responseEnd resource download|number|资源加载耗时| loadEventStart - domContentLoadedEventEnd dom Ready|number|DOM完成加载|domContentLoadedEventEnd - fetchStart page load|number|页面完全加载|loadEventStart - fetchStart

FP

字段|字段类型|描述|备注 |---|---|----|---| value|number|从导航到浏览器向屏幕呈现第一个像素之间的时间|

FCP

字段|字段类型|描述|备注 |---|----|----|---| value|number|浏览器呈现来自DOM的第一部分内容|

LCP

字段|字段类型|描述|备注 |---|---|----|---| value|number|视口中可见的最大图像或文本块的渲染时间|

FID

字段|字段类型|描述|备注 |---|---|----|---| eventName|string|事件名| targetCls|string|目标对象类名| startTime|number|事件触发时间| delay|number|事件延迟时间| eventHandleTime|number|事件处理时间|

CLS

字段|字段类型|描述|备注 |---|---|----|---| value|number|页面元素意外位移量|

FPS

字段|字段类型|描述|备注 |---|---|----|---| value|number|页面刷新率

Resource Flow

字段|字段类型|描述|备注 |---|---|----|---| value|PerformanceResourceTiming|资源加载瀑布流

Page Info

字段|字段类型|描述|备注 |---|---|----|---| host|DOMString|域名,可能带有端口号 hostname|DOMString|域名 href|DOMString|整个URL protocol|DOMString|URL协议 origin|DOMString|页面来源的域名 port|DOMString|端口号 pathname|DOMString|URL路径部分,以'/'开头 search|DOMString|URL参数,以'?'开头 hash|DOMString|URL标识,以'#'开头 userAgent|DOMString|用户代理字符串

Network Info

字段|字段类型|描述|备注 |---|---|----|---| downlink|double|有效带宽|单位Mbps effectiveType|string|连接类型|slow-2g、2g、3g、4g rtt|number|来回通信延迟|https://zh.wikipedia.org/wiki/%E4%BE%86%E5%9B%9E%E9%80%9A%E8%A8%8A%E5%BB%B6%E9%81%B2

Device Info

字段|字段类型|描述|备注 |---|---|----|---| deviceMemory|float|设备内存大致数量|单位GB hardwareConcurrency|number|返回可用于运行在用户的计算机上的线程的逻辑处理器的数量 jsHeapSizeLimit|number|上下文可用的最大内存|单位MB totalJSHeapSize|number|已分配的内存|单位MB usedJSHeapSize|number|当前活跃的内存|单位MB