js区分webkit核心浏览器chrome，360浏览器

<script>
    //来源：https://github.com/cloudcome/alien/blob/master/src/core/navigator/shell.js#L68 
    //由于来源使用了AMD模式加载，需要导入先关AMD类库比较麻烦，所以做了些许修改，并且来源判断不了chrome，会被识别为360浏览器
    var browerTool = (function () {
        var win = window, nav = win.navigator, doc = win.document, ieAX = win.ActiveXObject, ieMode = doc.documentMode, REG_APPLE = /^Apple/;
        var ieVer = _getIeVersion() || ieMode || 0, isIe = ieAX || ieMode, chromiumType = _getChromiumType();
        function _testExternal(reg, type) {//区分webkit核心主要通过external中的对象来判断，是否包含特殊的方法名称
            var external = win.external || {};
            for (var i in external) if (reg.test(type ? external[i] : i)) return true;
            return false;
        }
        function _getChromiumType() {
            if (isIe || typeof win.scrollMaxX !== 'undefined' || REG_APPLE.test(nav.vendor || '')) return '';//无法识别
            var _track = 'track' in document.createElement('track');
            var webstoreKeysLength = win.chrome && win.chrome.webstore ? Object.keys(win.chrome.webstore).length : 0;
            if (_testExternal(/^sogou/i, 0)) return 'sogou';
            if (_testExternal(/^liebao/i, 0)) return 'liebao';
            //==========以下方法不是external或者clientInformation特有的，可能其他浏览器后续版本会增加，如果判断失败也是无解了
            if (_testExternal(/^getguid/i, 0)) return 'qq';
            if (_testExternal(/^getnextreqid/i, 0)) return 'baidu';
            if (win.clientInformation && win.clientInformation.getBattery) return 'chrome';
            //==========
            if (_track) return webstoreKeysLength > 1 ? '360ee' : '360se';
            return '';
        }
        function _getIeVersion() {
            var v = 3, p = document.createElement('p'), all = p.getElementsByTagName('i');
            while (p.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->', all[0]);
            return v > 4 ? v : 0;
        }
        return {
        isIE: (function () { return !!ieVer; })(),
        ieVersion: (function () { return ieVer; })(),
        isChrome: (function () { return chromiumType === 'chrome'; })(),
        is360se: (function () { return chromiumType === '360se'; })(),
        is360ee: (function () { return chromiumType === '360ee'; })(),
        isLiebao: (function () { return navigator.userAgent.indexOf('LBBROWSER') != -1; })(),
        isSogou: (function () { return chromiumType === 'sogou'; })(),
        isQQ: (function () { return navigator.userAgent.indexOf('QQBrowser') != -1; })(),
        isBaidu: (function () { return navigator.userAgent.indexOf('BIDUBrowser') != -1; })(),
        isFiefox: (function () { return navigator.userAgent.indexOf('Firefox') != -1 })(),//火狐
        isTheWorld: (function () { return navigator.userAgent.indexOf('TheWorld') != -1 })(),//世界之窗
        isOpera: (function () { return !!window.opr })()//欧朋
    };
    })();
    for (attr in browerTool) document.write(attr + '=' + browerTool[attr] + '<br/>');
    
</script>