[英]checking for IE11 in the javascript code
我正在檢查IE11
的腳本,但以下內容似乎不起作用,它返回 false。
function isIE () {
var myNav = navigator.userAgent.toLowerCase();
alert(myNav);
return (myNav.indexOf('msie') != -1) ? parseInt(myNav.split('msie')[1]) : false;
}
alert(isIE());
它似乎確實找到了msie
任何人都可以更新此功能以檢測IE11
不再推薦檢查特定瀏覽器 - 功能檢測通常更有用。 如果你真的需要檢測IE11,下面的頁面在檢測IE xx部分下有一個示例腳本:
http://www.javascriptkit.com/javatutors/navigator.shtml
萬一此鏈接將來消失,腳本如下:
//userAgent in IE7 WinXP returns: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)
//userAgent in IE11 Win7 returns: Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko
if (navigator.userAgent.indexOf('MSIE') != -1)
var detectIEregexp = /MSIE (\d+\.\d+);/ //test for MSIE x.x
else // if no "MSIE" string in userAgent
var detectIEregexp = /Trident.*rv[ :]*(\d+\.\d+)/ //test for rv:x.x or rv x.x where Trident string exists
if (detectIEregexp.test(navigator.userAgent)){ //if some form of IE
var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number
if (ieversion>=12)
document.write("You're using IE12 or above")
else if (ieversion>=11)
document.write("You're using IE11 or above")
else if (ieversion>=10)
document.write("You're using IE10 or above")
else if (ieversion>=9)
document.write("You're using IE9 or above")
else if (ieversion>=8)
document.write("You're using IE8 or above")
else if (ieversion>=7)
document.write("You're using IE7.x")
else if (ieversion>=6)
document.write("You're using IE6.x")
else if (ieversion>=5)
document.write("You're using IE5.x")
}
else{
document.write("n/a")
}
因此,要替換您的功能,您可以使用以下內容:
function isIE() {
if (navigator.userAgent.indexOf('MSIE') != -1)
return true;
var detectIEregexp = /Trident.*rv[ :]*(\d+\.\d+)/
return detectIEregexp.test(navigator.userAgent);
}
var myNav = navigator.userAgent;
對於 IE10 及以下
myNav.indexOf('MSIE ') != -1
對於 IE11
myNav.indexOf('Trident/') != -1
對於 IE12
myNav.indexOf('Edge/') != -1
您更新的功能將是這樣的
function isIE () {
var myNav = navigator.userAgent;
return (myNav.indexOf('MSIE ') != -1 || myNav.indexOf('Trident/') != -1 || myNav.indexOf('Edge/') != -1);
}
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