BrowserVersionOwn?TypeAs String
Chrome76.0.3802ownfunctionfunction PerformanceMark() { [native code] }
Chrome76.0.3800???
Chrome76.0.3788ownfunctionfunction PerformanceMark() { [native code] }
Chrome75.0.3770???
Chrome75.0.3755ownfunctionfunction PerformanceMark() { [native code] }
Chrome74.0.3729ownfunctionfunction PerformanceMark() { [native code] }
Chrome73.0.3683ownfunctionfunction PerformanceMark() { [native code] }
Chrome72.0.3626ownfunctionfunction PerformanceMark() { [native code] }
Chrome72.0.3617???
Chrome71.0.3578ownfunctionfunction PerformanceMark() { [native code] }
Chrome71.0.3539ownfunctionfunction PerformanceMark() { [native code] }
Chrome70.0.3538ownfunctionfunction PerformanceMark() { [native code] }
Chrome70.0.3534ownfunctionfunction PerformanceMark() { [native code] }
Chrome70.0.3531ownfunctionfunction PerformanceMark() { [native code] }
Chrome70.0.3522ownfunctionfunction PerformanceMark() { [native code] }
Chrome70.0.3520ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3497ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3494ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3481???
Chrome69.0.3472ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3466ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3457ownfunctionfunction PerformanceMark() { [native code] }
Chrome69.0.3449???
Chrome68.0.3440ownfunctionfunction PerformanceMark() { [native code] }
Chrome68.0.3434???
Chrome68.0.3431???
Chrome68.0.3428???
Chrome68.0.3423???
Chrome68.0.3409ownfunctionfunction PerformanceMark() { [native code] }
Chrome68.0.3400ownfunctionfunction PerformanceMark() { [native code] }
Chrome68.0.3398???
Chrome67.0.3500???
Chrome67.0.3396ownfunctionfunction PerformanceMark() { [native code] }
Chrome67.0.3394???
Chrome67.0.3386???
Chrome67.0.3384???
Chrome66.0.3450ownfunctionfunction PerformanceMark() { [native code] }
Chrome66.0.3359ownfunctionfunction PerformanceMark() { [native code] }
Chrome66.0.3336???
Chrome65.0.3325ownobject[object PerformanceMark]
Chrome65.0.3298???
Chrome65.0.3294ownfunctionfunction PerformanceMark() { [native code] }
Chrome64.0.3350ownfunctionfunction PerformanceMark() { [native code] }
Chrome64.0.3282ownfunctionfunction PerformanceMark() { [native code] }
Chrome64.0.3253ownfunctionfunction PerformanceMark() { [native code] }
Chrome63.0.3239ownfunctionfunction PerformanceMark() { [native code] }
Chrome63.0.3231ownfunctionfunction PerformanceMark() { [native code] }
Chrome63.0.3214???
Chrome63.0.3205???
Chrome62.0.3202ownfunctionfunction PerformanceMark() { [native code] }
Chrome62.0.3176ownfunctionfunction PerformanceMark() { [native code] }
Chrome62.0.3175???
Chrome62.0.3172ownfunctionfunction PerformanceMark() { [native code] }
Chrome62.0.3166???
Chrome61.0.3163ownfunctionfunction PerformanceMark() { [native code] }
Chrome61.0.3159???
Chrome61.0.3156ownfunctionfunction PerformanceMark() { [native code] }
Chrome61.0.3150???
Chrome61.0.3149ownfunctionfunction PerformanceMark() { [native code] }
Chrome61.0.3147ownfunctionfunction PerformanceMark() { [native code] }
Chrome61.0.3126???
Chrome60.0.3112ownfunctionfunction PerformanceMark() { [native code] }
Chrome59.0.3071ownfunctionfunction PerformanceMark() { [native code] }
Chrome58.0.3300ownfunctionfunction PerformanceMark() { [native code] }
Chrome58.0.3050ownfunctionfunction PerformanceMark() { [native code] }
Chrome58.0.3029ownfunctionfunction PerformanceMark() { [native code] }
Chrome57.0.2987???
Chrome56.0.2924ownfunctionfunction PerformanceMark() { [native code] }
Chrome55.0.2883???
Chrome54.0.2840ownfunctionfunction PerformanceMark() { [native code] }
Chrome53.0.2785???
Chrome52.0.2743ownfunctionfunction PerformanceMark() { [native code] }
Chrome51.0.2704ownfunctionfunction PerformanceMark() { [native code] }
Chrome50.0.2661ownfunctionfunction PerformanceMark() { [native code] }
Chrome49.0.2623ownfunctionfunction PerformanceMark() { [native code] }
Chrome48.0.2564ownfunctionfunction PerformanceMark() { [native code] }
Chrome47.0.2526???
Chrome46.0.2490???
Chrome45.0.2454???
Chrome44.0.2403ownfunctionfunction PerformanceMark() { [native code] }
Chrome43.0.2357???
Chrome42.0.2311???
Chrome41.0.2272ownfunctionfunction PerformanceMark() { [native code] }
Chrome40.0.2214???
Chrome39.0.2171???
Chrome38.0.2125ownfunctionfunction PerformanceMark() { [native code] }
Chrome38.0.1025???
Chrome37.0.2062ownfunctionfunction PerformanceMark() { [native code] }
Chrome36.0.1985ownfunctionfunction PerformanceMark() { [native code] }
Chrome35.0.1916???
Chrome34.0.1847???
Chrome33.0.1750ownfunctionfunction PerformanceMark() { [native code] }
Chrome31.0.1650ownfunctionfunction PerformanceMark() { [native code] }
Chrome29.0.1547???
Chrome27.0.1453???
Chrome25.0.1364???
Chrome24.0.1312???
Chrome19.0.1084???
Chrome15.0.874???
CriOS66.0.3359???
CriOS65.0.3325???
CriOS64.0.3282???
CriOS62.0.3202???
CriOS59.0.3071???
Edge76.0.167ownfunctionfunction PerformanceMark() { [native code] }
Edge76.0.159???
Edge76.0.147ownfunctionfunction PerformanceMark() { [native code] }
Edge76.0.141ownfunctionfunction PerformanceMark() { [native code] }
Edge75.0.130ownfunctionfunction PerformanceMark() { [native code] }
Edge75.0.126ownfunctionfunction PerformanceMark() { [native code] }
Edge75.0.121ownfunctionfunction PerformanceMark() { [native code] }
Edge75.0.111ownfunctionfunction PerformanceMark() { [native code] }
Edge74.1.96ownfunctionfunction PerformanceMark() { [native code] }
Edge18.17763.0ownfunctionfunction PerformanceMark() { [native code] }
Edge17.17134.0ownfunctionfunction PerformanceMark() { [native code] }
Edge16.16299.0ownfunctionfunction PerformanceMark() { [native code] }
Edge15.15063.0ownfunctionfunction PerformanceMark() { [native code] }
Edge14.14393.0ownfunctionfunction PerformanceMark() { [native code] }
Edge13.10586.0ownfunctionfunction PerformanceMark() { [native code] }
Edge12.10136.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox68.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox67.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox66.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox65.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox64.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox63.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox62.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox61.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox60.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox59.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox58.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox57.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox56.2.5???
Firefox56.2.3ownfunctionfunction PerformanceMark() { [native code] }
Firefox56.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox55.0.0ownobject[object PerformanceMark]
Firefox54.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox53.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox52.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox51.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox50.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox49.0.0???
Firefox47.0.0???
Firefox45.0.0???
Firefox44.0.0???
Firefox43.0.0???
Firefox39.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox38.0.0ownfunctionfunction PerformanceMark() { [native code] }
Firefox35.0.0???
Firefox33.0.0???
Firefox30.0.0???
Firefox29.0.0???
Firefox28.0.0???
Firefox27.0.0???
Firefox24.0.0???
Firefox18.0.0???
Firefox6.0.0???
Firefox5.0.1???
Googlebot2.1.0ownfunctionfunction PerformanceMark() { [native code] }
IE11.0.0ownobject[object PerformanceMark]
IE10.0.0ownobject[object PerformanceMark]
IE9.0.0???
Opera9.80.0???
Safari538.1.0???
Safari12.1.1???
Safari12.1.0ownfunctionfunction PerformanceMark() { [native code] }
Safari12.0.3ownfunctionfunction PerformanceMark() { [native code] }
Safari12.0.2???
Safari12.0.1ownfunctionfunction PerformanceMark() { [native code] }
Safari12.0.0ownfunctionfunction PerformanceMark() { [native code] }
Safari11.1.2ownfunctionfunction PerformanceMark() { [native code] }
Safari11.1.1???
Safari11.1.0ownfunctionfunction PerformanceMark() { [native code] }
Safari11.0.3???
Safari11.0.2???
Safari11.0.1???
Safari11.0.0ownfunctionfunction PerformanceMark() { [native code] }
Safari10.1.2???
Safari10.1.1???
Safari10.1.0???
Safari10.0.3???
Safari10.0.0???
Safari9.1.3???
Safari9.1.2???
Safari8.0.8???
Safari8.0.0???
Safari7.1.8???
Safari7.0.3???
Safari6.0.5???
Safari5.1.7???
Safari5.0.5???
Safari4.0.0ownfunctionfunction PerformanceMark() { [native code] }
SamsungBrowser9.0.0???
SamsungBrowser7.2.0ownfunctionfunction PerformanceMark() { [native code] }
SamsungBrowser6.2.0ownfunctionfunction PerformanceMark() { [native code] }
SamsungBrowser4.0.0???

PropertiesChromeCriOSEdgeFirefoxGooglebotIEOperaSafariSamsungBrowser
length 31.0.1650? 12.0.0 38.0.0 2.1.0?? 4.0.0 6.2.0
prototype 31.0.1650? 12.0.0 38.0.0 2.1.0 10.0.0? 4.0.0 6.2.0
toString 31.0.1650?? 38.0.0 2.1.0?? 4.0.0?