浏览器侦测代码 --- Browser detect

http://www.quirksmode.org/js/detect.html

var BrowserDetect = {init: function () {this.browser = this.searchString(this.dataBrowser) || "";this.version = this.searchVersion(navigator.userAgent) ||this.searchVersion(navigator.appVersion) ||"";this.OS = this.searchString(this.dataOS) || "";},searchString: function (data) {for (var i = 0, l = data.length ; i < l; 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;}}return null;},searchVersion: function (dataString) {var index = dataString.indexOf(this.versionSearchString);if (index == -1) { return null; }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" },{ 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" },{ 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" },{ 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();