performanceObserverEntryList.getEntriesByType(type)

• type <string>

• 返回：<PerformanceEntry[]>

  ¥Returns: <PerformanceEntry[]>

返回按时间顺序排列的 PerformanceEntry 对象列表，其中 performanceEntry.startTime 的 performanceEntry.entryType 等于 type。

¥Returns a list of PerformanceEntry objects in chronological order with respect to performanceEntry.startTime whose performanceEntry.entryType is equal to type.

const {
  performance,
  PerformanceObserver,
} = require('node:perf_hooks');

const obs = new PerformanceObserver((perfObserverList, observer) => {
  console.log(perfObserverList.getEntriesByType('mark'));
  /**

   * [

   *   PerformanceEntry {

   *     name: 'test',

   *     entryType: 'mark',

   *     startTime: 55.897834,

   *     duration: 0

   *   },

   *   PerformanceEntry {

   *     name: 'meow',

   *     entryType: 'mark',

   *     startTime: 56.350146,

   *     duration: 0

   *   }

   * ]
   */
  performance.clearMarks();
  performance.clearMeasures();
  observer.disconnect();
});
obs.observe({ type: 'mark' });

performance.mark('test');
performance.mark('meow'); 拷贝