JS_判断打开的是什么手机品牌，判断是否是手机，平板，pc

判断业务是否是 iphone、华为、小米、oppo、view、三星 打开
手机品牌userAgent库 http://www.fynas.com/ua

function judgeBrand(sUserAgent) {var isIphone = sUserAgent.match(/iphone/i) == 'iphone';var isHuawei = sUserAgent.match(/huawei/i) == 'huawei';var isHonor = sUserAgent.match(/honor/i) == 'honor';var isOppo = sUserAgent.match(/oppo/i) == 'oppo';var isOppoR15 = sUserAgent.match(/pacm00/i) == 'pacm00';var isVivo = sUserAgent.match(/vivo/i) == 'vivo';var isXiaomi = sUserAgent.match(/mi\s/i) == 'mi ';var isXiaomi2s = sUserAgent.match(/mix\s/i) == 'mix ';var isRedmi = sUserAgent.match(/redmi/i) == 'redmi';var isSamsung = sUserAgent.match(/sm-/i) == 'sm-';var isLG = sUserAgent.match(/lg/i) == 'lg';if (isIphone) {return 'iPhone';} else if (isHuawei || isHonor) {return 'Huawei';} else if (isOppo || isOppoR15) {return 'Oppo';} else if (isVivo) {return 'vivo';} else if (isXiaomi || isRedmi || isXiaomi2s) {return 'mi';} else if (isSamsung) {return 'Samsung';} else if (isLG) {return 'LG';} else {return '其他型号手机';}
}var brand = judgeBrand(navigator.userAgent.toLowerCase());

判断是否是手机，平板，pc

function checkAgent() {var sUserAgent = navigator.userAgent.toLowerCase();var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";var bIsMidp = sUserAgent.match(/midp/i) == "midp";var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";var bIsAndroid = sUserAgent.match(/android/i) == "android";var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";if (!(bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM || bIsIpad)) {return 'pc';} else if(bIsIpad){return 'pad';}else{return 'phone';}
}

注：以上functioncheckAgent，在使用华为P20 Pro 默认浏览器打开时，会被误判为PC。因为在华为P20 Pro的默认浏览器上，并没有重写userAgent，拿到的userAgent跟在PC上拿到的一样。目前只发现华为机型的默认浏览器有这个错误