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
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;
}
}
这结合了kennebec的(K)答案和Hermann Ingjaldsson的(H)答案:
维护原始答案的最小代码。(K) 使用Microsoft Edge (K) 扩展导航器对象，而不是创建新的变量/对象。(K) 将浏览器版本和名称分离为独立的子对象。(H)
navigator.browserSpecs = (function(){ 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(/\b(OPR|Edge)\/(\d+)/); if(tem != null) return {name:tem[1].replace('OPR', 'Opera'),version:tem[2]}; } 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]}; })(); console.log(navigator.browserSpecs); //Object { name: "Firefox", version: "42" } if (navigator.browserSpecs.name == 'Firefox') { // Do something for Firefox. if (navigator.browserSpecs.version > 42) { // Do something for Firefox versions greater than 42. } } else { // Do something for all other browsers. }
看看navigator。userAgent - Firefox/xxx.xxx. xxx。XXX是在结尾指定的。
为什么不另一个解决方案:
navigator.userAgent.includes("Firefox")? log("Mozilla") :log("Chrome")
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);
