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
对于任何使用angular的PWA应用程序，你都可以在index.html -的body部分中检查浏览器是否受支持
<body>
<div id="browser"></div>
<script>
var operabrowser = true;
operabrowser = (navigator.userAgent.indexOf('Opera Mini') > -1);
if (operabrowser) {
txt = "<p>Browser not supported use different browser...</p>";
document.getElementById("browser").innerHTML = txt;
}
</script>
</body>
其他回答
<script type="text/javascript">
var version = navigator.appVersion;
alert(version);
</script>
我想分享我为我必须解决的问题而编写的代码。它在大多数主流浏览器中都进行了测试，对我来说，它就像一个魅力!
似乎这段代码与其他答案非常相似，但它进行了修改，以便我可以使用它而不是我最近错过的jquery浏览器对象，当然它是上述代码的组合，从我的部分我做了一些改进:
(function($, ua){
var M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i) || [],
tem,
res;
if(/trident/i.test(M[1])){
tem = /\brv[ :]+(\d+)/g.exec(ua) || [];
res = 'IE ' + (tem[1] || '');
}
else if(M[1] === 'Chrome'){
tem = ua.match(/\b(OPR|Edge)\/(\d+)/);
if(tem != null)
res = tem.slice(1).join(' ').replace('OPR', 'Opera');
else
res = [M[1], M[2]];
}
else {
M = M[2]? [M[1], M[2]] : [navigator.appName, navigator.appVersion, '-?'];
if((tem = ua.match(/version\/(\d+)/i)) != null) M = M.splice(1, 1, tem[1]);
res = M;
}
res = typeof res === 'string'? res.split(' ') : res;
$.browser = {
name: res[0],
version: res[1],
msie: /msie|ie/i.test(res[0]),
firefox: /firefox/i.test(res[0]),
opera: /opera/i.test(res[0]),
chrome: /chrome/i.test(res[0]),
edge: /edge/i.test(res[0])
}
})(typeof jQuery != 'undefined'? jQuery : window.$, navigator.userAgent);
console.log($.browser.name, $.browser.version, $.browser.msie);
// if IE 11 output is: IE 11 true
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);
}
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→
更新的代码，以检测浏览器从iOS。
navigator.sayswho= (function(){
var ua= navigator.userAgent;
var tem;
var 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 'IE '+(tem[1] || '');
}
if(M[1]=== 'Chrome'){
tem= ua.match(/\b(OPR)\/(\d+)/);
if(tem!= null) return 'Opera '+ tem.slice(1)[1];
tem= ua.match(/\b(Edg[a-zA-Z]{0,3})\/(\d+)/);
if(tem!= null) return 'Edge '+ tem.slice(1)[1];
} else if(M[1]=== 'Safari') {
tem= ua.match(/\b(EdgiOS)\/(\d+)/);
if(tem!= null) return 'Edge '+ tem.slice(1)[1];
tem= ua.match(/\b(FxiOS)\/(\d+)/);
if(tem!= null) return 'Firefox '+ tem.slice(1)[1];
tem= ua.match(/\b(CriOS)\/(\d+)/);
if(tem!= null) return 'Chrome '+ tem.slice(1)[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 M.join(' ');
}) ();
