BrowserVersionOwn?TypeAs String
AppleWebit537.36.0???
BingPreview1.0.0???
Chrome56.0.2924???
Edge84.0.522???
Firefox3.6.12???
FxiOS36.0.0???
IE11.0.0ownobject[object WEBGL_compressed_texture_s3tc]
Mobile15.0.0???
render2.0.0???
Safari4.0.0???
YandexBot3.0.0???

PropertiesAppleWebitBingPreviewChromeEdgeFirefoxFxiOSIEMobilerenderSafariYandexBot
COMPRESSED_RGBA_S3TC_DXT1_EXT?????? 11.0.0????
COMPRESSED_RGBA_S3TC_DXT3_EXT?????? 11.0.0????
COMPRESSED_RGBA_S3TC_DXT5_EXT?????? 11.0.0????
COMPRESSED_RGB_S3TC_DXT1_EXT?????? 11.0.0????
prototype?????? 11.0.0????