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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
| commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
| tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/api/window/performance | |
| parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
| download | translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2 translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip | |
initial commit
Diffstat (limited to 'files/zh-cn/web/api/window/performance')
| -rw-r--r-- | files/zh-cn/web/api/window/performance/index.html | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/files/zh-cn/web/api/window/performance/index.html b/files/zh-cn/web/api/window/performance/index.html new file mode 100644 index 0000000000..926f4b6b40 --- /dev/null +++ b/files/zh-cn/web/api/window/performance/index.html @@ -0,0 +1,35 @@ +--- +title: Window.performance +slug: Web/API/Window/performance +tags: + - Window.performance + - analytics + - 前端代码埋点 +translation_of: Web/API/Window/performance +--- +<div>{{APIREf}}</div> + +<div>Web Performance API允许网页访问某些函数来测量网页和Web应用程序的性能,包括 <a href="/en-US/docs/Navigation_timing">Navigation Timing</a> API和高分辨率时间数据。</div> + +<h2 id="Methods" name="Methods">方法</h2> + +<dl> + <dt>{{domxref("Performance.mark()", "performance.mark()")}}</dt> + <dd>通过一个给定的名称,将该名称(作为键)和对应的{{domxref("DOMHighResTimeStamp")}}(作为值)保存在一个哈希结构里。该键值对表示了从某一时刻(译者注:某一时刻通常是 navigationStart 事件发生时刻)到记录时刻间隔的毫秒数。(译者注:该方法一般用来多次记录时间,用于求得各记录间的时间差)</dd> +</dl> + +<dl> + <dt>{{domxref("Performance.now()", "performance.now()")}}</dt> + <dd>该方法返回一个{{domxref("DOMHighResTimeStamp")}}对象,该对象表示从某一时刻(译者注:某一时刻通常是 navigationStart 事件发生时刻)到调用该方法时刻的毫秒数。</dd> +</dl> + +<h2 id="Properties" name="Properties">属性</h2> + +<dl> + <dt>{{domxref("Performance.timing", "performance.timing")}}</dt> + <dd>是一个{{domxref("PerformanceTiming")}} 对象,包含延迟相关的性能信息。</dd> + <dt>{{domxref("Performance.navigation", "performance.navigation")}}</dt> + <dd>是一个 {{domxref("PerformanceNavigation")}} 对象,该对象表示在当前给定浏览上下文中网页导航的类型(译者注:TYPE_BACK_FORWARD,TYPE_NAVIGATE, TYPE_RELOAD,TYPE_RESERVED)以及次数。</dd> + <dt><a href="https://docs.webplatform.org/apis/timing/properties/memory">performance.memory</a></dt> + <dd>在Chrome中添加的一个非标准扩展。</dd> +</dl> |
