Vue 源码浏览器验证 // Browser environment sniffing export const inBrowser = typeof window !== 'undefined' export const inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform export const weexPlatform = inWeex && WXEnvironment.platform.toLowerCase() export const UA = inBrowser && window.navigator.userAgent.toLowerCase() export const isIE = UA && /msie|trident/.test(UA) export const isIE9 = UA && UA.indexOf('msie 9.0') > 0 export const isEdge = UA && UA.indexOf('edge/') > 0 export const isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android') export const isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios') export const isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge export const isPhantomJS = UA && /phantomjs/.test(UA) export const isFF = UA && UA.match(/firefox\/(\d+)/)
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