Internet Explorer 9對象檢測

Question

我在尋找能識別IE9的對象檢測功能檢查。你可以幫我嗎？

Answer 1

通過James Padolsey退房this snippet：

// ---------------------------------------------------------- 
// A short snippet for detecting versions of IE in JavaScript 
// without resorting to user-agent sniffing 
// ---------------------------------------------------------- 
// If you're not in IE (or IE version is less than 5) then: 
//  ie === undefined 
// If you're in IE (>=5) then you can determine which version: 
//  ie === 7; // IE7 
// Thus, to detect IE: 
//  if (ie) {} 
// And to detect the version: 
//  ie === 6 // IE6 
//  ie > 7 // IE8, IE9 ... 
//  ie < 9 // Anything less than IE9 
// ---------------------------------------------------------- 

// UPDATE: Now using Live NodeList idea from @jdalton 

var ie = (function(){ 

    var undef, 
     v = 3, 
     div = document.createElement('div'), 
     all = div.getElementsByTagName('i'); 

    while (
     div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->', 
     all[0] 
    ); 

    return v > 4 ? v : undef; 

}()); 

之後，你可以使用這樣的：

if (ie == 9) { 
    // It’s IE9! 
    // Insert your code here 
} 

這裏的好處是，它並沒有嗅出UA字符串（，本身並不可靠） - 相反，它使用條件註釋，它在IE中可靠地工作。

這可以用來檢測IE5-9。

Answer 2

不是100％肯定這是你問什麼，但如果你想檢測一下，你可以做訪問者的瀏覽器的信息查詢navigator.appVersion

例子：

<div id="example"></div> 

<script type="text/javascript"> 

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>"; 

document.getElementById("example").innerHTML=txt; 

</script> 

Answer 3

使用屬性在每個版本中引入的IE window object的區分IE版本：

• IE> = 7：("onpropertychange" in document) && (!!window.XMLHttpRequest)

• IE> = 8：("onpropertychange" in document) && (!!window.XDomainRequest)

• IE> = 9：("onpropertychange" in document) && (!!window.innerWidth)

• IE> = 10：("onpropertychange" in document) && (!!window.matchMedia)

• IE> = 11：(!!window.msMatchMedia) && (!window.doScroll)