浏览器检测代码

broswer.js

Client = (function() {
    var d = {engine: {ie: 0,gecko: 0,webkit: 0,opera: 0,khtml: 0},browser: {ie: 0,firefox: 0,chrome: 0,opera: 0,safari: 0,konq: 0}};
    var b = navigator.userAgent;
    var c = d.engine;
    var a = d.browser;
    if (window.opera) {
        a.version = c.version = window.opera.version();
        a.opera = c.opera = parseFloat(c.version)
    } else {
        if (/AppleWebKit\/(\S+)/.test(b)) {
            c.version = RegExp["$1"];
            c.webkit = parseFloat(c.version);
            if (/Chrome\/(\S+)/.test(b)) {
                a.version = RegExp["$1"];
                a.chrome = parseFloat(a.version)
            } else {
                if (/Version\/(\S+)/.test(b)) {
                    a.version = RegExp["$1"];
                    a.safari = parseFloat(a.version)
                }
            }
        } else {
            if (/KHTML\/(\S+)/.test(b) || /Konqueror\/([^;]+)/.test(b)) {
                a.version = c.version = RegExp["$1"];
                a.konq = c.khtml = parseFloat(c.version)
            } else {
                if (/rv:([^\)]+)\) Gecko\/\d{8}/.test(b)) {
                    c.version = RegExp["$1"];
                    c.gecko = parseFloat(c.version);
                    if (/Firefox\/(\S+)/.test(b)) {
                        a.version = RegExp["$1"];
                        a.firefox = parseFloat(a.version)
                    }
                } else {
                    if (/MSIE ([^;]+)/.test(b)) {
                        a.version = c.version = RegExp["$1"];
                        a.ie = c.ie = parseFloat(c.version)
                    }
                }
            }
        }
    }
    return d
})();