Recently in doing WebForm, browser compatibility is a problem, here I collected some information to obtain the browser, can be used for some users, prompted the browser version is too low, let the upgrade version. This will save us a lot of time and effort to debug compatibility. That's what I think.
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Detect browser and version
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use JavaScript to detect browser names and their versions of visitors.
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Code section:
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- <body>
<script type= "Text/javascript" >
var browser=navigator.appname
var b_version=navigator.appversion
var version=parsefloat (b_version)
document.write ("Browser name:" + browser)
document.write ("<br/>")
document.write ("browser version:" + version)
</script>
</body>
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Results:
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Browser Name: Netscape
Browser version: 5
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More information on detecting browsers
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use JavaScript to detect more information about the visitor's browser.
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Code section:
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- <body>
<script type= "Text/javascript" >
document.write ("<p> browser:")
document.write (navigator.appname + "</p>")
document.write ("<p> browser version:")
document.write (navigator.appversion + "</p>")
document.write ("<p> Code:")
document.write (navigator.appcodename + "</p>")
document.write ("<p> Platform:")
document.write (Navigator.platform + "</p>")
document.write ("<p>cookies enabled:")
document.write (navigator.cookieenabled + "</p>")
document.write ("<p> User Agent header for browser:")
document.write (navigator.useragent + "</p>")
</script>
</body>
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Results:
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Browser: Netscape
Browser version: 5.0 (Windows)
Code: Mozilla
Platform: Win32
Cookies Enabled: True
User Agent header for browser: mozilla/5.0 (Windows NT 6.1; rv:20.0) gecko/20100101 firefox/20.0
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Detect all of your browser's information
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use JavaScript to detect all information about the visitor's browser.
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Code section:
- <body>
<script type= "Text/javascript" >
var x = navigator;
document.write ("codename=" + x.appcodename);
document.write ("<br/>");
document.write ("minorversion=" + x.appminorversion);
document.write ("<br/>");
document.write ("name=" + x.appname);
document.write ("<br/>");
document.write ("version=" + x.appversion);
document.write ("<br/>");
document.write ("cookieenabled=" + x.cookieenabled);
document.write ("<br/>");
document.write ("cpuclass=" + x.cpuclass);
document.write ("<br/>");
document.write ("online=" + x.online);
document.write ("<br/>");
document.write ("platform=" + x.platform);
document.write ("<br/>");
document.write ("ua=" + x.useragent);
document.write ("<br/>");
document.write ("browserlanguage=" + x.browserlanguage);
document.write ("<br/>");
document.write ("systemlanguage=" + x.systemlanguage);
document.write ("<br/>");
document.write ("userlanguage=" + x.userlanguage);
</script>
</body>
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Results:
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Codename=mozilla
minorversion=undefined
Name=netscape
version=5.0 (Windows)
Cookieenabled=true
cpuclass=undefined
Online=true
Platform=win32
ua=mozilla/5.0 (Windows NT 6.1; rv:20.0) gecko/20100101 firefox/20.0
browserlanguage=undefined
systemlanguage=undefined
userlanguage=undefined
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Alert users based on browser type
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use JavaScript to detect the browser name and version of the visitor, and then generate a warning box for different content based on that information.
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Code section:
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- <script type= "Text/javascript" >
function Detectbrowser ()
{
var browser=navigator.appname
var b_version=navigator.appversion
var version=parsefloat (b_version)
if (browser== "Netscape" | | browser== "Microsoft Internet Explorer") && (version>=4))
{Alert ("Your browser is advanced enough! ")}
Else
{Alert ("It's time to upgrade your browser! ")}
}
</script>
<body onload= "Detectbrowser ()" >
</body>
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Results:
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when the browser is running, it pops up in the form of a pop-up window.
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For example, I use the Firefox browser.
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One thing Bo friends should note is that JavaScript gets the same version number in IE6, IE5, and IE4.
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Note: Darren
JS Get browser information, give a friendship hint, avoid some compatibility issues
