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JavaScript determines IE browser version number

Source: Internet
Author: User
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Example

The code is as follows Copy Code

MSIE = Int (/msie (d+)/.exec ((navigator.useragent). toLowerCase ()) | | []) [1]);
/* IE 11 changed its useragent format, so to further judge * *
if (isNaN (MSIE)) {
MSIE = int (/trident/.*; rv: (d+)/.exec ((navigator.useragent). toUpperCase ()) | | []) [1]);
}

Example

Good idea, add a DIV element, and then use the while loop to determine whether the div tag using IE conditional annotation contains the I tag, and if it does, V will increase by 1 until the browser cannot read the I tag. The V value at this time if greater than 4 is the actual version number of IE, or V is less than IE5 IE browser or non IE browser, return false.

The code is as follows Copy Code

var ieversion = (function () {
var v = 3,
div = document.createelement (' div '),
all = Div.getelementsbytagname (' i ');
while (
div.innerhtml = ' <!--[if GT IE ' + (++v) + ']><i></i><! [endif]--> ',
ALL[0]
); Www.111cn.net
Return v > 4? V:false;
})();

Example jquery

When you want to use it, you can use $.BROWSER.MSIE6~10 to do the judgment processing. The other is to directly modify the JQuery.browser.version of the method:

The code is as follows Copy Code

<script type= "Text/javascript" src= "/jquery.min.js" ></script>
<script type= "Text/javascript" >
$ (function () {
var useragent = Window.navigator.userAgent.toLowerCase ();

$.browser.msie10 = $.browser.msie &&/msie 10.0/i.test (useragent);
$.BROWSER.MSIE9 = $.browser.msie &&/msie 9.0/i.test (useragent);
$.BROWSER.MSIE8 = $.browser.msie &&/msie 8.0/i.test (useragent);
$.browser.msie7 = $.browser.msie &&/msie 7.0/i.test (useragent);
$.browser.msie6 =!$.browser.msie8 &&!$.browser.msie7 && $.browser.msie &&/msie 6.0/i.test ( useragent);
Www.111cn.net
$ (". Info"). HTML (
"""""");
});
</script>

<body>
<div class= "Info" ></div>
</body>

Final summary

Regular search user_agent;
But because of historical reasons, User_agent has been inaccurate, and by the major manufacturers to change the mess.
Like what:

ie10:mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; trident/6.0)

ie11:mozilla/5.0 (Windows NT 6.3; trident/7.0; RV 11.0) Like Gecko

So we should take the standard as the main.

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Related Keywords:
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