PC，移动端分开引用JS

PC，移动端分开引用JS

   var basejs = [
        '//ossweb-img.qq.com/images/js/milo/milo.js',
    ];

    var _isMobile_ = function(){
        return /iphone|ios|android|mini|mobile|mobi|Nokia|Symbian|iPod|iPad|Windows\s+Phone|MQQBrowser|wp7|wp8|UCBrowser7|UCWEB|360\s+Aphone\s+Browser|blackberry/i.test(navigator.userAgent);
    };
    if(_isMobile_()){
        basejs = [
            '//ossweb-img.qq.com/images/js/mobile_bundle/milo.js',
        ]
    }
    for (var i = 0; i < basejs.length; i++) {
        document.write('<script type="text/javascript" src="' + basejs[i] + '"></s'+'cript>');
    }