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分析

¥Analytics

Next.js 内置了对测量和报告性能指标的支持。你可以使用 useReportWebVitals 钩子自行管理报告,或者 Vercel 提供 托管服务 来自动为你收集和可视化指标。

¥Next.js has built-in support for measuring and reporting performance metrics. You can either use the useReportWebVitals hook to manage reporting yourself, or alternatively, Vercel provides a managed service to automatically collect and visualize metrics for you.

客户端检测

¥Client Instrumentation

对于更高级的分析和监控需求,Next.js 提供了一个 instrumentation-client.js|ts 文件,它会在应用的前端代码开始执行之前运行。这非常适合设置全局分析、错误跟踪或性能监控工具。

¥For more advanced analytics and monitoring needs, Next.js provides a instrumentation-client.js|ts file that runs before your application's frontend code starts executing. This is ideal for setting up global analytics, error tracking, or performance monitoring tools.

要使用它,请在应用的根目录中创建一个 instrumentation-client.jsinstrumentation-client.ts 文件:

¥To use it, create an instrumentation-client.js or instrumentation-client.ts file in your application's root directory:

构建你自己的

¥Build Your Own

查看 API 参考 了解更多信息。

¥View the API Reference for more information.

网络生命体

¥Web Vitals

网络生命体 是一组有用的指标,旨在捕捉网页的用户体验。以下 Web Vitals 均包含在内:

¥Web Vitals are a set of useful metrics that aim to capture the user experience of a web page. The following web vitals are all included:

你可以使用 name 属性处理这些指标的所有结果。

¥You can handle all the results of these metrics using the name property.

自定义指标

¥Custom Metrics

除了上面列出的核心指标外,还有一些其他自定义指标用于衡量页面加载和渲染所需的时间:

¥In addition to the core metrics listed above, there are some additional custom metrics that measure the time it takes for the page to hydrate and render:

  • Next.js-hydration:页面开始和完成数据同步所需的时间(以毫秒为单位)

    ¥Next.js-hydration: Length of time it takes for the page to start and finish hydrating (in ms)

  • Next.js-route-change-to-render:页面在路由更改后开始渲染所需的时间(以毫秒为单位)

    ¥Next.js-route-change-to-render: Length of time it takes for a page to start rendering after a route change (in ms)

  • Next.js-render:页面在路由更改后完成渲染所需的时间(以毫秒为单位)

    ¥Next.js-render: Length of time it takes for a page to finish render after a route change (in ms)

你可以单独处理所有这些指标的结果:

¥You can handle all the results of these metrics separately:

这些指标适用于所有支持 用户计时 API 的浏览器。

¥These metrics work in all browsers that support the User Timing API.

将结果发送到外部系统

¥Sending results to external systems

你可以将结果发送到任何端点,以测量和跟踪站点上的真实用户性能。例如:

¥You can send results to any endpoint to measure and track real user performance on your site. For example:

需要了解:如果你使用 谷歌分析,则使用 id 值可以让你手动构建度量分布(以计算百分位数等)

¥Good to know: If you use Google Analytics, using the id value can allow you to construct metric distributions manually (to calculate percentiles, etc.)

阅读有关 将结果发送至 Google Analytics 的更多信息。

¥Read more about sending results to Google Analytics.