Merge branch 'feat/rum_docs@nwl'

Author: niuweili

flashduty/en/2. RUM/3. Performance Monitoring/2. Metrics.md

@@ -114,17 +114,6 @@ document.addEventListener("scroll", function handler() {
 });
 ```
 
-### How to Calculate Loading Time
-
-To accommodate modern web applications, loading time monitors network requests and DOM changes.
-
-**Initial loading**: The loading time equals the longer of the following two:
-
-- The difference between `navigationStart` and `loadEventEnd`, or
-- The difference between `navigationStart` and the time when the page first becomes inactive. See [How to Calculate Page Activity](#how-to-calculate-page-activity) for details.
-
-**SPA route changes**: The loading time equals the difference between the URL change and the time when the page first becomes inactive. See [How to Calculate Page Activity](#how-to-calculate-page-activity) for details.
-
 ## Considerations
 
 ### 1. Naming Conventions

flashduty/zh/2. RUM/3. 性能监控/2. 指标上报.md

@@ -114,17 +114,6 @@ document.addEventListener("scroll", function handler() {
 });
 ```
 
-### 如何计算加载时间
-
-为了适应现代 Web 应用程序，加载时间会监控网络请求和 DOM 变更。
-
-**初始加载**：加载时间等于以下两者中较长的一个：
-
-- `navigationStart` 和 `loadEventEnd` 之间的差值，或
-- `navigationStart` 和页面首次无活动的时间之间的差值。有关详细信息，请参见[如何计算页面活动](#如何计算页面活动)。
-
-**SPA 路由更改**：加载时间等于 URL 更改和页面首次无活动的时间之间的差值。有关详细信息，请参见[如何计算页面活动](#如何计算页面活动)。
-
 ## 注意事项
 
 ### 1. 命名规范