我一直在寻找可以检测访问网站的用户使用的是火狐3还是火狐4的代码。我所找到的只是检测浏览器类型而不是版本的代码。
如何检测这样的浏览器版本?
当前回答
为此，您需要检查navigator的值。appVersion或navigator.userAgent 尝试使用:
console.log(navigator.appVersion)
其他回答
var ua = navigator.userAgent;
if (/Firefox\//.test(ua))
var Firefox = /Firefox\/([0-9\.A-z]+)/.exec(ua)[1];
这是Fzs2和kennebec的更新，用于新边缘铬
function get_browser() { var ua=navigator.userAgent,tem,M=ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || []; if(/trident/i.test(M[1])){ tem=/\brv[ :]+(\d+)/g.exec(ua) || []; return {name:'IE',version:(tem[1]||'')}; } if(M[1]==='Chrome'){ tem=ua.match(/\bEdg\/(\d+)/) if(tem!=null) {return {name:'Edge(Chromium)', version:tem[1]};} tem=ua.match(/\bOPR\/(\d+)/) if(tem!=null) {return {name:'Opera', version:tem[1]};} } M=M[2]? [M[1], M[2]]: [navigator.appName, navigator.appVersion, '-?']; if((tem=ua.match(/version\/(\d+)/i))!=null) {M.splice(1,1,tem[1]);} return { name: M[0], version: M[1] }; } var browser=get_browser(); // browser.name = 'Edge(Chromium)' // browser.version = '86' console.log(browser);
我根据Hermann Ingjaldsson的回答写了一个版本检测器，但是更健壮，它返回一个包含名称/版本数据的对象。它涵盖了主要的浏览器，但我不介意过多的移动浏览器和小浏览器:
function getBrowserData(nav) {
var data = {};
var ua = data.uaString = nav.userAgent;
var browserMatch = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*([\d\.]+)/i) || [];
if (browserMatch[1]) { browserMatch[1] = browserMatch[1].toLowerCase(); }
var operaMatch = browserMatch[1] === 'chrome';
if (operaMatch) { operaMatch = ua.match(/\bOPR\/([\d\.]+)/); }
if (/trident/i.test(browserMatch[1])) {
var msieMatch = /\brv[ :]+([\d\.]+)/g.exec(ua) || [];
data.name = 'msie';
data.version = msieMatch[1];
}
else if (operaMatch) {
data.name = 'opera';
data.version = operaMatch[1];
}
else if (browserMatch[1] === 'safari') {
var safariVersionMatch = ua.match(/version\/([\d\.]+)/i);
data.name = 'safari';
data.version = safariVersionMatch[1];
}
else {
data.name = browserMatch[1];
data.version = browserMatch[2];
}
var versionParts = [];
if (data.version) {
var versionPartsMatch = data.version.match(/(\d+)/g) || [];
for (var i=0; i < versionPartsMatch.length; i++) {
versionParts.push(versionPartsMatch[i]);
}
if (versionParts.length > 0) { data.majorVersion = versionParts[0]; }
}
data.name = data.name || '(unknown browser name)';
data.version = {
full: data.version || '(unknown full browser version)',
parts: versionParts,
major: versionParts.length > 0 ? versionParts[0] : '(unknown major browser version)'
};
return data;
};
它可以这样使用:
var brData = getBrowserData(window.navigator || navigator);
console.log('name: ' + brData.name);
console.log('major version: ' + brData.version.major);
// etc.
我写这个是为了满足我的需要。
它可以获取信息，比如是否是移动设备或是否有视网膜显示器
试一试
var nav = {
isMobile:function(){
return (navigator.userAgent.match(/iPhone|iPad|iPod|Android|BlackBerry|Opera Mini|IEMobile/i) != null);
},
isDesktop:function(){
return (navigator.userAgent.match(/iPhone|iPad|iPod|Android|BlackBerry|Opera Mini|IEMobile/i) == null);
},
isAndroid: function() {
return navigator.userAgent.match(/Android/i);
},
isBlackBerry: function() {
return navigator.userAgent.match(/BlackBerry/i);
},
isIOS: function() {
return navigator.userAgent.match(/iPhone|iPad|iPod/i);
},
isOpera: function() {
return navigator.userAgent.match(/Opera Mini/i);
},
isWindows: function() {
return navigator.userAgent.match(/IEMobile/i);
},
isRetina:function(){
return window.devicePixelRatio && window.devicePixelRatio > 1;
},
isIPad:function(){
isIPad = (/ipad/gi).test(navigator.platform);
return isIPad;
},
isLandscape:function(){
if(window.innerHeight < window.innerWidth){
return true;
}
return false;
},
getIOSVersion:function(){
if(this.isIOS()){
var OSVersion = navigator.appVersion.match(/OS (\d+_\d+)/i);
OSVersion = OSVersion[1] ? +OSVersion[1].replace('_', '.') : 0;
return OSVersion;
}
else
return false;
},
isStandAlone:function(){
if(_.is(navigator.standalone))
return navigator.standalone;
return false;
},
isChrome:function(){
var isChrome = (/Chrome/gi).test(navigator.appVersion);
var isSafari = (/Safari/gi).test(navigator.appVersion)
return isChrome && isSafari;
},
isSafari:function(){
var isSafari = (/Safari/gi).test(navigator.appVersion)
var isChrome = (/Chrome/gi).test(navigator.appVersion)
return !isChrome && isSafari;
}
}
var nVer = navigator.appVersion;
var nAgt = navigator.userAgent;
var browserName = navigator.appName;
var fullVersion = '' + parseFloat(navigator.appVersion);
var majorVersion = parseInt(navigator.appVersion, 10);
var nameOffset, verOffset, ix;
// In Opera 15+, the true version is after "OPR/"
if ((verOffset = nAgt.indexOf("OPR/")) != -1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset + 4);
}
// In older Opera, the true version is after "Opera" or after "Version"
else if ((verOffset = nAgt.indexOf("Opera")) != -1) {
browserName = "Opera";
fullVersion = nAgt.substring(verOffset + 6);
if ((verOffset = nAgt.indexOf("Version")) != -1)
fullVersion = nAgt.substring(verOffset + 8);
}
// In MSIE, the true version is after "MSIE" in userAgent
else if ((verOffset = nAgt.indexOf("MSIE")) != -1) {
browserName = "Microsoft Internet Explorer";
fullVersion = nAgt.substring(verOffset + 5);
}
// In Chrome, the true version is after "Chrome"
else if ((verOffset = nAgt.indexOf("Chrome")) != -1) {
browserName = "Google Chrome";
fullVersion = nAgt.substring(verOffset + 7);
}
// In Safari, the true version is after "Safari" or after "Version"
else if ((verOffset = nAgt.indexOf("Safari")) != -1) {
browserName = "Safari";
fullVersion = nAgt.substring(verOffset + 7);
if ((verOffset = nAgt.indexOf("Version")) != -1)
fullVersion = nAgt.substring(verOffset + 8);
}
// In Firefox, the true version is after "Firefox"
else if ((verOffset = nAgt.indexOf("Firefox")) != -1) {
browserName = "Mozilla Firefox";
fullVersion = nAgt.substring(verOffset + 8);
}
// In most other browsers, "name/version" is at the end of userAgent
else if ((nameOffset = nAgt.lastIndexOf(' ') + 1) < (verOffset = nAgt.lastIndexOf('/'))) {
browserName = nAgt.substring(nameOffset, verOffset);
fullVersion = nAgt.substring(verOffset + 1);
if (browserName.toLowerCase() == browserName.toUpperCase()) {
browserName = navigator.appName;
}
}
// trim the fullVersion string at semicolon/space if present
if ((ix = fullVersion.indexOf(';')) != -1) fullVersion = fullVersion.substring(0, ix);
if ((ix = fullVersion.indexOf(' ')) != -1) fullVersion = fullVersion.substring(0, ix);
majorVersion = parseInt('' + fullVersion, 10);
if (isNaN(majorVersion)) {
fullVersion = '' + parseFloat(navigator.appVersion);
majorVersion = parseInt(navigator.appVersion, 10);
}
