BrowserVersionOwn?TypeAs String
Chrome94.0.4590???
Edge92.0.902ownfunctionfunction BackgroundFetchRecord() { [native code] }
Firefox90.0.0???
Java11.0.10???
requests2.26.0???
Scrapy1.5.1???

PropertiesChromeEdgeFirefoxJavarequestsScrapy
length 80.0.3987 92.0.902????
prototype 80.0.3987 92.0.902????