如何使用JavaScript确定确切的浏览器和版本?
当前回答
这将告诉您有关浏览器及其版本的所有详细信息。
<!DOCTYPE html>
<html>
<body>
<div id="example"></div>
<script>
txt = "<p>Browser CodeName: " + navigator.appCodeName + "</p>";
txt+= "<p>Browser Name: " + navigator.appName + "</p>";
txt+= "<p>Browser Version: " + navigator.appVersion + "</p>";
txt+= "<p>Cookies Enabled: " + navigator.cookieEnabled + "</p>";
txt+= "<p>Platform: " + navigator.platform + "</p>";
txt+= "<p>User-agent header: " + navigator.userAgent + "</p>";
txt+= "<p>User-agent language: " + navigator.systemLanguage + "</p>";
document.getElementById("example").innerHTML=txt;
</script>
</body>
</html>
其他回答
您可以使用jQuery库来检测浏览器版本。
例子:
jQuery.browser.version
然而，这只有在你同时使用jQuery的其他函数时才有意义。对我来说，仅仅为了检测浏览器而添加整个库似乎有点小题大做。
更多信息: http://api.jquery.com/jQuery.browser/
(你需要向下滚动一点)
如果你想要一个返回浏览器和版本的函数，这里是对原始答案的改进:
navigator.browserInfo =
(
function()
{
var browser = '';
var version = '';
var idString = '';
var ua = navigator.userAgent;
var tem = [];
var M = ua.match(/(opera|chrome|safari|firefox|msie|trident(?=\/))\/?\s*(\d+)/i);
//IE will be identified as 'Trident' and a different version number. The name must be corrected to 'Internet Explorer' and the correct version identified.
//ie correction
if(/trident/i.test(M[1]))
{
tem = /\brv[ :]+(\d+.?\d*)/g.exec(ua) || [];
browser = 'Internet Explorer';
version = tem[1];
}
//firefox
else if(/firefox/i.test(M[1]))
{
tem = /\brv[ :]+(\d+.?\d*)/g.exec(ua) || [];
browser = 'Firefox';
version = tem[1];
}
//safari
else if(/safari/i.test(M[1]))
{
tem = ua.match(/\bVersion\/(\d+.?\d*\s*\w+)/);
browser = 'Safari';
version = tem[1];
}
//If 'Chrome' is found, it may be another browser.
else if(M[1] === 'Chrome')
{
//opera
var temOpr = ua.match(/\b(OPR)\/(\d+.?\d*.?\d*.?\d*)/);
//edge
var temEdge = ua.match(/\b(Edge)\/(\d+.?\d*)/);
//chrome
var temChrome = ua.match(/\b(Chrome)\/(\d+.?\d*.?\d*.?\d*)/);
//a genuine 'Chrome' reading will result from ONLY temChrome not being null.
var genuineChrome = temOpr == null && temEdge == null && temChrome != null;
if(temOpr != null)
{
browser = temOpr[1].replace('OPR', 'Opera');
version = temOpr[2];
}
if(temEdge != null)
{
browser = temEdge[1];
version = temEdge[2];
}
if(genuineChrome)
{
browser = temChrome[1];
version = temChrome[2];
}
}
//There will be some odd balls, so if you wish to support those browsers, add functionality to display those browsers as well.
if(browser == '' || version == '')
{
idString = 'We couldn\'t find your browser, but you can still use the site';
}
else
{
idString = browser + ' version ' + version;
}
alert('Your browser is ' + idString);
//store the type of browser locally
if(typeof(Storage) !== "undefined")
{
//Store
localStorage.setItem('browser', browser);
localStorage.setItem('version', version);
}
else
{
alert('local storage not available');
}
}
)();
这样，它还将结果存储在本地，因此不必每次都执行该检查。
遗憾的是，IE11的导航器中不再有MSIE。
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C; BRI/2; BOIE9;ENUS; rv:11.0) like Gecko
至于为什么你想知道你在使用哪个浏览器，这是因为每个浏览器都有自己的一组错误，你最终实现了浏览器和版本特定的解决方案，或者告诉用户使用不同的浏览器!
下面是我如何为Internet Explorer做自定义CSS:
在我的JavaScript文件:
function isIE () {
var myNav = navigator.userAgent.toLowerCase();
return (myNav.indexOf('msie') != -1) ? parseInt(myNav.split('msie')[1]) : false;
}
jQuery(document).ready(function(){
if(var_isIE){
if(var_isIE == 10){
jQuery("html").addClass("ie10");
}
if(var_isIE == 8){
jQuery("html").addClass("ie8");
// you can also call here some function to disable things that
//are not supported in IE, or override browser default styles.
}
}
});
然后在我的CSS文件中，定义每个不同的样式:
.ie10 .some-class span{
.......
}
.ie8 .some-class span{
.......
}
//Copy and paste this into your code/text editor, and try it
//Before you use this to fix compatability bugs, it's best to try inform the browser provider that you have found a bug and there latest browser may not be up to date with the current web standards
//Since none of the browsers use the browser identification system properly you need to do something a bit like this
//Write browser identification
document.write(navigator.userAgent + "<br>")
//Detect browser and write the corresponding name
if (navigator.userAgent.search("MSIE") >= 0){
document.write('"MS Internet Explorer ');
var position = navigator.userAgent.search("MSIE") + 5;
var end = navigator.userAgent.search("; Windows");
var version = navigator.userAgent.substring(position,end);
document.write(version + '"');
}
else if (navigator.userAgent.search("Chrome") >= 0){
document.write('"Google Chrome ');// For some reason in the browser identification Chrome contains the word "Safari" so when detecting for Safari you need to include Not Chrome
var position = navigator.userAgent.search("Chrome") + 7;
var end = navigator.userAgent.search(" Safari");
var version = navigator.userAgent.substring(position,end);
document.write(version + '"');
}
else if (navigator.userAgent.search("Firefox") >= 0){
document.write('"Mozilla Firefox ');
var position = navigator.userAgent.search("Firefox") + 8;
var version = navigator.userAgent.substring(position);
document.write(version + '"');
}
else if (navigator.userAgent.search("Safari") >= 0 && navigator.userAgent.search("Chrome") < 0){//<< Here
document.write('"Apple Safari ');
var position = navigator.userAgent.search("Version") + 8;
var end = navigator.userAgent.search(" Safari");
var version = navigator.userAgent.substring(position,end);
document.write(version + '"');
}
else if (navigator.userAgent.search("Opera") >= 0){
document.write('"Opera ');
var position = navigator.userAgent.search("Version") + 8;
var version = navigator.userAgent.substring(position);
document.write(version + '"');
}
else{
document.write('"Other"');
}
//Use w3schools research the `search()` method as other methods are availible
