网络('net')的详细信息

当 performanceEntry.type 等于 'net' 时，则 performanceEntry.detail 属性将是一个包含额外信息的 <Object>。

如果 performanceEntry.name 等于 connect，则 detail 将包含以下属性：host、port。

When performanceEntry.type is equal to 'net', the performanceEntry.detail property will be an <Object> containing additional information.

If performanceEntry.name is equal to connect, the detail will contain the following properties: host, port.