performance.getEntries()
返回 PerformanceEntry 对象的列表，按照相对于 performanceEntry.startTime 的时间顺序排列。
如果您只对某些类型或具有某些名称的性能条目感兴趣，则参阅 performance.getEntriesByType() 和 performance.getEntriesByName()。
- Returns: <PerformanceEntry[]>
Returns a list of PerformanceEntry objects in chronological order with
respect to performanceEntry.startTime. If you are only interested in
performance entries of certain types or that have certain names, see
performance.getEntriesByType() and performance.getEntriesByName().