跨瀏覽器基礎(chǔ)事件

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 1 //跨瀏覽器添加事件
 2 function addEvent(obj, type, fn) {
 3     if (obj.addEventListener) {
 4         obj.addEventListener(type, fn, false);
 5     } else if (obj.attachEvent) {
 6         obj.attachEvent('on' + type, function () {
 7             fn.call(obj);
 8         });
 9     }
10 }
11 
12 //跨瀏覽器移除事件
13 function removeEvent(obj, type, fn) {
14     if (obj.removeEventListener) {
15         obj.removeEventListener(type, fn, false);
16     } else if (obj.detachEvent) {
17         obj.detachEvent('on' + type, fn);
18     }
19 }
20 
21 //跨瀏覽器阻止默認(rèn)行為
22 function preDef(evt) {
23     var e = evt || window.event;
24     if (e.preventDefault) {
25         e.preventDefault();
26     } else {
27         e.returnValue = false;
28     }
29 }
30 
31 //跨瀏覽器獲取目標(biāo)對(duì)象
32 function getTarget(evt) {
33     if (evt.target) {        //W3C
34         return evt.target;
35     } else if (window.event.srcElement) {        //IE
36         return window.event.srcElement;
37     }
38 }
39 
40 //跨瀏覽器獲取字符編碼
41 function getCharCode(evt) {
42     var e = evt || window.event;
43     if (typeof e.charCode == 'number') {
44         return e.charCode;
45     } else {
46         return e.keyCode;
47     }
48 }

瀏覽器檢測

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var client = function(){//rendering enginesvar engine = {            ie: 0,gecko: 0,webkit: 0,khtml: 0,opera: 0,//complete versionver: null  };//browsersvar browser = {//browsersie: 0,firefox: 0,safari: 0,konq: 0,opera: 0,chrome: 0,//specific versionver: null};//platform/device/OSvar system = {win: false,mac: false,x11: false,//mobile devicesiphone: false,ipod: false,ipad: false,ios: false,android: false,nokiaN: false,winMobile: false,//game systemswii: false,ps: false };    //detect rendering engines/browsersvar ua = navigator.userAgent;    if (window.opera){engine.ver = browser.ver = window.opera.version();engine.opera = browser.opera = parseFloat(engine.ver);} else if (/AppleWebKit\/(\S+)/.test(ua)){engine.ver = RegExp["$1"];engine.webkit = parseFloat(engine.ver);//figure out if it's Chrome or Safariif (/Chrome\/(\S+)/.test(ua)){browser.ver = RegExp["$1"];browser.chrome = parseFloat(browser.ver);} else if (/Version\/(\S+)/.test(ua)){browser.ver = RegExp["$1"];browser.safari = parseFloat(browser.ver);} else {//approximate versionvar safariVersion = 1;if (engine.webkit < 100){safariVersion = 1;} else if (engine.webkit < 312){safariVersion = 1.2;} else if (engine.webkit < 412){safariVersion = 1.3;} else {safariVersion = 2;}   browser.safari = browser.ver = safariVersion;        }} else if (/KHTML\/(\S+)/.test(ua) || /Konqueror\/([^;]+)/.test(ua)){engine.ver = browser.ver = RegExp["$1"];engine.khtml = browser.konq = parseFloat(engine.ver);} else if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){    engine.ver = RegExp["$1"];engine.gecko = parseFloat(engine.ver);//determine if it's Firefoxif (/Firefox\/(\S+)/.test(ua)){browser.ver = RegExp["$1"];browser.firefox = parseFloat(browser.ver);}} else if (/MSIE ([^;]+)/.test(ua)){    engine.ver = browser.ver = RegExp["$1"];engine.ie = browser.ie = parseFloat(engine.ver);}//detect browsersbrowser.ie = engine.ie;browser.opera = engine.opera;//detect platformvar p = navigator.platform;system.win = p.indexOf("Win") == 0;system.mac = p.indexOf("Mac") == 0;system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);//detect windows operating systemsif (system.win){if (/Win(?:dows )?([^do]{2})\s?(\d+\.\d+)?/.test(ua)){if (RegExp["$1"] == "NT"){switch(RegExp["$2"]){case "5.0":system.win = "2000";break;case "5.1":system.win = "XP";break;case "6.0":system.win = "Vista";break;case "6.1":system.win = "7";break;default:system.win = "NT";break;                }                            } else if (RegExp["$1"] == "9x"){system.win = "ME";} else {system.win = RegExp["$1"];}}}//mobile devicessystem.iphone = ua.indexOf("iPhone") > -1;system.ipod = ua.indexOf("iPod") > -1;system.ipad = ua.indexOf("iPad") > -1;system.nokiaN = ua.indexOf("NokiaN") > -1;//windows mobileif (system.win == "CE"){system.winMobile = system.win;} else if (system.win == "Ph"){if(/Windows Phone OS (\d+.\d+)/.test(ua)){;system.win = "Phone";system.winMobile = parseFloat(RegExp["$1"]);}}//determine iOS versionif (system.mac && ua.indexOf("Mobile") > -1){if (/CPU (?:iPhone )?OS (\d+_\d+)/.test(ua)){system.ios = parseFloat(RegExp.$1.replace("_", "."));} else {system.ios = 2;  //can't really detect - so guess
        }}//determine Android versionif (/Android (\d+\.\d+)/.test(ua)){system.android = parseFloat(RegExp.$1);}//gaming systemssystem.wii = ua.indexOf("Wii") > -1;system.ps = /playstation/i.test(ua);//return itreturn {engine:     engine,browser:    browser,system:     system        };}();

判斷瀏覽器的名稱、版本號(hào)、操作系統(tǒng)

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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: "Internet 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();alert(BrowserDetect.browser); //名稱
alert(BrowserDetect.version); //版本
alert(BrowserDetect.OS) //系統(tǒng)

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轉(zhuǎn)載于:https://www.cnblogs.com/CherryGhost/archive/2013/01/23/2874040.html

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