浏览器事件一些js代码，自己备用的。高手不要笑话我。。（跨浏览器基础事件，浏览器检测，判断浏览器的名称、版本号、操作系统）

本文提供了跨浏览器事件处理的方法，包括添加、移除事件及阻止默认行为等实用函数，并介绍了如何检测不同浏览器及其版本信息。

发一下牢骚和主题无关：

跨浏览器础基事件

View Code

 1 //跨浏览器添加事件
 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 //跨浏览器移除事件
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 //跨浏览器止阻默许行为
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 //跨浏览器获得目标对象
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 //跨浏览器获得字符编码
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 }

浏览器检测

View Code

var client = function(){

    //rendering engines
    var engine = {            
        ie: 0,
        gecko: 0,
        webkit: 0,
        khtml: 0,
        opera: 0,

        //complete version
        ver: null  
    };
    
    //browsers
    var browser = {
        
        //browsers
        ie: 0,
        firefox: 0,
        safari: 0,
        konq: 0,
        opera: 0,
        chrome: 0,

        //specific version
        ver: null
    };

    
    //platform/device/OS
    var system = {
        win: false,
        mac: false,
        x11: false,
        
        //mobile devices
        iphone: false,
        ipod: false,
        ipad: false,
        ios: false,
        android: false,
        nokiaN: false,
        winMobile: false,
        
        //game systems
        wii: false,
        ps: false 
    };    

    //detect rendering engines/browsers
    var 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 Safari
        if (/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 version
            var 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 Firefox
        if (/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 browsers
    browser.ie = engine.ie;
    browser.opera = engine.opera;
    

    //detect platform
    var 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 systems
    if (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 devices
    system.iphone = ua.indexOf("iPhone") > -1;
    system.ipod = ua.indexOf("iPod") > -1;
    system.ipad = ua.indexOf("iPad") > -1;
    system.nokiaN = ua.indexOf("NokiaN") > -1;
    
    //windows mobile
    if (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 version
    if (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 version
    if (/Android (\d+\.\d+)/.test(ua)){
        system.android = parseFloat(RegExp.$1);
    }
    
    //gaming systems
    system.wii = ua.indexOf("Wii") > -1;
    system.ps = /playstation/i.test(ua);
    
    //return it
    return {
        engine:     engine,
        browser:    browser,
        system:     system        
    };

}();

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断判浏览器的名称、本版号、操作系统

View Code

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); //名称
alert(BrowserDetect.version); //本版
alert(BrowserDetect.OS) //系统

文章结束给大家分享下程序员的一些笑话语录：面试官：熟悉哪种语言
应聘者：JAVA
面试官：知道什么叫类么
应聘者：我这人实在，工作努力，不知道什么叫累
面试官：知道什么是包?
应聘者：我这人实在平常不带包也不用公司准备了
面试官：知道什么是接口吗?
应聘者：我这个人工作认真。从来不找借口偷懒
面试官：知道什么是继承么
应聘者：我是孤儿没什么可以继承的
面试官:知道什么叫对象么？
应聘者:知道，不过我工作努力，上进心强，暂时还没有打算找对象。
面试官：知道多态么？
应聘者：知道，我很保守的。我认为让心爱的女人为了自已一时的快乐去堕胎是不道德的行为！请问这和C#有什么关系？？