How to access performance object of every resource in a web page?
如何获取网页中的每个资源的性能对象？
Performance object list, click the performance object you want to view.
“性能对象”列表中，单击要查看的性能对象。
Each performance object includes a number of individual performance counters.
每个性能对象均包含多个单一性能计数器。
Each performance object includes a number of individual performance counters.
每个性能对象均包含多个单一性能计数器。
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