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
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, the true version is after "Opera" or after "Version"
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 = "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 = "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);
}
document.write(''
+'Browser name = '+browserName+'<br>'
+'Full version = '+fullVersion+'<br>'
+'Major version = '+majorVersion+'<br>'
+'navigator.appName = '+navigator.appName+'<br>'
+'navigator.userAgent = '+navigator.userAgent+'<br>'
)
看这里的演示..http://jsfiddle.net/hw4jM/3/
其他回答
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.
在纯Javascript中，您可以在导航器上执行RegExp匹配。使用userAgent查找Firefox版本:
var uMatch = navigator.userAgent.match(/Firefox\/(.*)$/),
ffVersion;
if (uMatch && uMatch.length > 1) {
ffVersion = uMatch[1];
}
如果不是Firefox浏览器，ffVersion将未定义。
参见工作示例→
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);
以下是截至2019年5月处理浏览器检测的几个著名库。
Bowser by lancedikson - 3,761★s -最后更新于2019年5月26日- 4.8KB
var result = bowser.getParser(window.navigator.userAgent); console.log(结果); 文档。write("You are using " + result.parsedResult.browser.name + " v" + result.parsedResult.browser.version + “on”+ result.parsedResult.os.name); < script src = " https://unpkg.com/bowser@2.4.0 es5.js " > < /脚本>
*支持边缘基于铬
Platform.js by bestiejs - 2,250★s -最后更新于2018年10月30日- 5.9KB
console.log(平台); 文档。写上("你正在使用" + platform.name + . “V”+平台。版+ “On”+ platform.os); < script src = " https://cdnjs.cloudflare.com/ajax/libs/platform/1.3.5/platform.min.js " > < /脚本>
jQuery浏览器由gabceb - 504★s -最后更新2015年11月23日- 1.3KB
console.log (.browser美元) 文档。写("你正在使用" + $.browser.name + " V " + $.browser。versionNumber + “On”+ $.browser.platform); < script src = " https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js " > < /脚本> < script src = " https://cdnjs.cloudflare.com/ajax/libs/jquery-browser/0.1.0/jquery.browser.min.js " > < /脚本>
Detect.js(存档)by darcyclarke - 522★s -最后更新于2015年10月26日- 2.9KB
var result = detect.parse(navigator.userAgent); console.log(结果); 文档。write("You are using " + result.browser.family + “V”+ result.browser.version + “On”+ result.os.family); < script src = " https://cdnjs.cloudflare.com/ajax/libs/Detect.js/2.2.2/detect.min.js " > < /脚本>
浏览器检测(存档)由QuirksMode -最后更新2013年11月14日- 884B
console.log (BrowserDetect) 文档。write("You are using " + BrowserDetect. "浏览器+ v + BrowserDetect。版+ “on”+ BrowserDetect.OS); < script src = " https://kylemit.github.io/libraries/libraries/BrowserDetect.js " > < /脚本>
明显的提到:
该浏览器- 1355★s -最后更新于2018年10月2日 Modernizr - 23,397★s -最后更新2019年1月12日-喂喂喂马，特征检测应该驱动任何canIuse风格的问题。浏览器检测实际上只是为各个浏览器提供定制的图像、下载文件或说明。
进一步的阅读
堆栈溢出-浏览器检测JavaScript? 堆栈溢出-如何检测Safari, Chrome, IE, Firefox和Opera浏览器?
我用它来获得实际浏览器版本的名称和编号(int):
function getInfoBrowser() { 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: 'Explorer', version: parseInt((tem[1] || '')) }; } if (M[1] === 'Chrome') { tem = ua.match(/\b(OPR|Edge)\/(\d+)/); if (tem != null) { let app = tem.slice(1).toString().split(','); return { name: app[0].replace('OPR', 'Opera'), version: parseInt(app[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: parseInt(M[1]) }; } function getBrowser(){ let info = getInfoBrowser(); $("#i-name").html(info.name); $("#i-version").html(info.version); } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <input type="button" onclick="getBrowser();" value="Get Info Browser"/> <hr/> Name: <span id="i-name"></span><br/> Version: <span id="i-version"></span>
这个磨合
铬;火狐浏览器;狩猎;Internet Explorer (>= 9);歌剧;边缘
给我。
