--- title: PerformanceNavigation slug: Web/API/PerformanceNavigation translation_of: Web/API/PerformanceNavigation --- <p>{{APIRef("Navigation Timing")}}</p> <h2 id="Summary">Summary</h2> <p><strong><code>PerformanceNavigation</code></strong><code>接口呈现了如何导航到当前文档的信息。</code></p> <p>这个类型的对象可以被只读属性{{domxref("Performance.navigation")}}调用。</p> <h2 id="Properties">Properties</h2> <p><em><code>PerformanceNavigation</code> 接口不继承任何属性。</em></p> <dl> <dt>{{domxref("PerformanceNavigation.type")}} {{readonlyInline}}</dt> <dd>一个无符号短整型,表示是如何导航到这个页面的。可能的值如下: <dl> <dt><code>TYPE_NAVIGATE</code> (0)</dt> <dd>当前页面是通过点击链接,书签和表单提交,或者脚本操作,或者在url中直接输入地址,type值为0</dd> <dt><code>TYPE_RELOAD</code> (1)</dt> <dd>点击刷新页面按钮或者通过{{domxref("Location.reload()")}}方法显示的页面,type值为1</dd> <dd>The page was accessed by clicking the Reload button or via the {{domxref("Location.reload()")}} method.</dd> <dt><code>TYPE_BACK_FORWARD</code> (2)</dt> <dd>页面通过历史记录和前进后退访问时。type值为2</dd> <dt><code>TYPE_RESERVED</code> (255)</dt> <dd>任何其他方式,type值为255</dd> </dl> </dd> <dt>{{domxref("PerformanceNavigation.redirectCount")}} {{readonlyInline}}</dt> <dd>无符号短整型,表示在到达这个页面之前重定向了多少次。</dd> </dl> <h2 id="Methods">Methods</h2> <p><em><em><code>Performance</code> 接口没有继承任何方法</em></em></p> <dl> <dt>{{domxref("PerformanceNavigation.toJSON()")}} {{non-standard_inline}}</dt> <dd>把<code>PerformanceNavigation</code>转换成JSON对象</dd> </dl> <h2 id="Specifications">Specifications</h2> <table class="standard-table"> <tbody> <tr> <th scope="col">Specification</th> <th scope="col">Status</th> <th scope="col">Comment</th> </tr> <tr> <td>{{SpecName('Navigation Timing', '#sec-navigation-info-interface', 'PerformanceNavigation')}}</td> <td>{{Spec2('Navigation Timing')}}</td> <td>Initial definition.</td> </tr> </tbody> </table> <h2 id="Browser_compatibility">Browser compatibility</h2> <div> <p>{{Compat("api.PerformanceNavigation")}}</p> </div> <h2 id="See_also">See also</h2> <ul> <li>The {{domxref("Performance")}} that allows access to an object of this type.</li> <li>{{domxref("PerformanceNavigationTiming")}} (part of Navigation Timing Level 2) {{experimental_inline}}</li> </ul>