你希望做的是所謂的「嗅探器」,通常認爲是不是非常優雅的方式來攻擊這個問題的種類。但它很有用。
Quirksmode可以說這是the best library。你堅持在大對象下成腳本,並使用這三個屬性查詢它:
BrowserDetect.browser
BrowserDetect.version
BrowserDetect.OS
全部對象源(見怪異模式以獲取更多信息):前
var BrowserDetect = {
init: function() {
this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
this.version = this.searchVersion(navigator.userAgent)
|| this.searchVersion(navigator.appVersion)
|| "an unknown version";
this.OS = this.searchString(this.dataOS) || "an unknown OS";
},
searchString: function (data) {
for (var i=0;i<data.length;i++) {
var dataString = data[i].string;
var dataProp = data[i].prop;
this.versionSearchString = data[i].versionSearch || data[i].identity;
if (dataString) {
if (dataString.indexOf(data[i].subString) != -1)
return data[i].identity;
}
else if (dataProp)
return data[i].identity;
}
},
searchVersion: function (dataString) {
var index = dataString.indexOf(this.versionSearchString);
if (index == -1) return;
return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
},
dataBrowser: [
{
string: navigator.userAgent,
subString: "Chrome",
identity: "Chrome"
},
{ string: navigator.userAgent,
subString: "OmniWeb",
versionSearch: "OmniWeb/",
identity: "OmniWeb"
},
{
string: navigator.vendor,
subString: "Apple",
identity: "Safari",
versionSearch: "Version"
},
{
prop: window.opera,
identity: "Opera",
versionSearch: "Version"
},
{
string: navigator.vendor,
subString: "iCab",
identity: "iCab"
},
{
string: navigator.vendor,
subString: "KDE",
identity: "Konqueror"
},
{
string: navigator.userAgent,
subString: "Firefox",
identity: "Firefox"
},
{
string: navigator.vendor,
subString: "Camino",
identity: "Camino"
},
{ // for newer Netscapes (6+)
string: navigator.userAgent,
subString: "Netscape",
identity: "Netscape"
},
{
string: navigator.userAgent,
subString: "MSIE",
identity: "Explorer",
versionSearch: "MSIE"
},
{
string: navigator.userAgent,
subString: "Gecko",
identity: "Mozilla",
versionSearch: "rv"
},
{ // for older Netscapes (4-)
string: navigator.userAgent,
subString: "Mozilla",
identity: "Netscape",
versionSearch: "Mozilla"
}
],
dataOS : [
{
string: navigator.platform,
subString: "Win",
identity: "Windows"
},
{
string: navigator.platform,
subString: "Mac",
identity: "Mac"
},
{
string: navigator.userAgent,
subString: "iPhone",
identity: "iPhone/iPod"
},
{
string: navigator.platform,
subString: "Linux",
identity: "Linux"
}
]
};
BrowserDetect.init();
這聽起來像一個可怕的想法。給他們的網站,但給他們一個通知道歉不得不給他們一個破碎的版本。 – lonesomeday 2012-02-02 00:08:55
@lonesome:id說取決於。例如,如果這是一個投資組合網站,或者可能暫時只有一個飛濺頁面 - 就好像該網站從未啓動過一樣。我認爲這比它在一個災難性的狀態下更好,併爲此道歉,特別是如果他在短期內會得到修復。 – prodigitalson 2012-02-02 00:16:43
也許吧。就我個人而言,我希望你說(a)如果你真的想要(如果你不能阻止我)和(b)給我們你的電子郵件地址,我們會告訴你,如果它是固定的,你可以查看該頁面。如果它不是*完全不可用,那就是...... – lonesomeday 2012-02-02 00:19:38