OSChina年度热门第二的代码赏析

image

<html>
<head>
<title>DZ新闻中心----DZ是世界上最牛的人!</title>


<script type="text/javascript">
    var str = ["D","Z","新","闻","中","心","----","D","Z","是","世","界","上","最","牛","的","人","!"," "," "," "];
var len = str.length;

var index = 0;
function rollTitle(){
    var title = "";
    if(index == len){
        index = 0;
    }else{
        index ++;
    }
    for(var i = 0; i < len; ++i){
        var j = i + index;
        if(j >= len){
            title += str[j - len];
        }else{
            title += str[j];
        }
    }
    document.getElementsByTagName("title")[0].innerText=title;
    

    setTimeout(rollTitle,500);
}

(function(){    
    setTimeout(rollTitle,500);
}());
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<style>
    p{
        padding-left:20px;
        font-size:35px;
    }
    A{
        COLOR:BLUE;
        text-decoration:none;
    }
</style>

</head>


<body>
<p>
    <a target="_blank" href="http://news.baidu.com/">百度新闻</a>
</p>
<p>
    <a target="_blank" href="http://www.sina.com.cn/">新浪门户</a>
    <a target="_blank" href="http://news.sina.com.cn/">新浪新闻</a>
</p>
<p>
    <a target="_blank" href="http://www.qq.com/">腾讯门户</a>    
    <a target="_blank" href="http://news.qq.com/">腾讯新闻</a>
</p>
<p>
    <a target="_blank" href="http://cn.msn.com/">MSN资讯</a>
</p>
<p>
    <a target="_blank" href="http://www.ifeng.com/">凤凰网</a>
    <a target="_blank" href="http://news.ifeng.com/">凤凰资讯</a>    
</p>
<p>
<a target="_blank" href="http://www.chinanews.com/">中国新闻网</a>
</p>
<p>
<a target="_blank" href="http://www.huanqiu.com/">环球网</a>
</p>
</body>

</html>

欣赏评论:KAO

WeixinApi.js

/**!
 * 微信内置浏览器的Javascript API,功能包括:
 *
 * 1、分享到微信朋友圈
 * 2、分享给微信好友
 * 3、分享到腾讯微博
 * 4、隐藏/显示右上角的菜单入口
 * 5、隐藏/显示底部浏览器工具栏
 * 6、获取当前的网络状态
 * 7、调起微信客户端的图片播放组件
 *
 * @author zhaoxianlie(http://www.baidufe.com)
 */
var WeixinApi = (function () {

    /**
     * 分享到微信朋友圈
     * @param       {Object}    data       待分享的信息
     * @p-config    {String}    appId      公众平台的appId(服务号可用)
     * @p-config    {String}    imageUrl   图片地址
     * @p-config    {String}    link       链接地址
     * @p-config    {String}    desc       描述
     * @p-config    {String}    title      分享的标题
     *
     * @param       {Object}    callbacks  相关回调方法
     * @p-config    {Boolean}   async                   ready方法是否需要异步执行,默认false
     * @p-config    {Function}  ready(argv)             就绪状态
     * @p-config    {Function}  dataLoaded(data)        数据加载完成后调用,async为true时有用,也可以为空
     * @p-config    {Function}  cancel(resp)    取消
     * @p-config    {Function}  fail(resp)      失败
     * @p-config    {Function}  confirm(resp)   成功
     * @p-config    {Function}  all(resp)       无论成功失败都会执行的回调
     */
    function weixinShareTimeline(data, callbacks) {
        callbacks = callbacks || {};
        var shareTimeline = function (theData) {
            WeixinJSBridge.invoke('shareTimeline', {
                "appid":theData.appId ? theData.appId : '',
                "img_url":theData.imgUrl,
                "link":theData.link,
                "desc":theData.title,
                "title":theData.desc, // 注意这里要分享出去的内容是desc
                "img_width":"120",
                "img_height":"120"
            }, function (resp) {
                switch (resp.err_msg) {
                    // share_timeline:cancel 用户取消
                    case 'share_timeline:cancel':
                        callbacks.cancel && callbacks.cancel(resp);
                        break;
                    // share_timeline:fail 发送失败
                    case 'share_timeline:fail':
                        callbacks.fail && callbacks.fail(resp);
                        break;
                    // share_timeline:confirm 发送成功
                    case 'share_timeline:confirm':
                    case 'share_timeline:ok':
                        callbacks.confirm && callbacks.confirm(resp);
                        break;
                }
                // 无论成功失败都会执行的回调
                callbacks.all && callbacks.all(resp);
            });
        };
        WeixinJSBridge.on('menu:share:timeline', function (argv) {
            if (callbacks.async && callbacks.ready) {
                if(!callbacks.__dataLoadedFuncInited) {
                    var loadedCb = callbacks.dataLoaded || new Function();
                    callbacks.dataLoaded = function (newData) {
                        loadedCb(newData);
                        shareTimeline(newData);
                    };
                    callbacks.__dataLoadedFuncInited = true;
                }
                // 然后就绪
                callbacks.ready && callbacks.ready(argv);
            } else {
                // 就绪状态
                callbacks.ready && callbacks.ready(argv);
                shareTimeline(data);
            }
        });
    }

    /**
     * 发送给微信上的好友
     * @param       {Object}    data       待分享的信息
     * @p-config    {String}    appId      公众平台的appId(服务号可用)
     * @p-config    {String}    imageUrl   图片地址
     * @p-config    {String}    link       链接地址
     * @p-config    {String}    desc       描述
     * @p-config    {String}    title      分享的标题
     *
     * @param       {Object}    callbacks  相关回调方法
     * @p-config    {Boolean}   async                   ready方法是否需要异步执行,默认false
     * @p-config    {Function}  ready(argv)             就绪状态
     * @p-config    {Function}  dataLoaded(data)        数据加载完成后调用,async为true时有用,也可以为空
     * @p-config    {Function}  cancel(resp)    取消
     * @p-config    {Function}  fail(resp)      失败
     * @p-config    {Function}  confirm(resp)   成功
     * @p-config    {Function}  all(resp)       无论成功失败都会执行的回调
     */
    function weixinSendAppMessage(data, callbacks) {
        callbacks = callbacks || {};
        var sendAppMessage = function (theData) {
            WeixinJSBridge.invoke('sendAppMessage', {
                "appid":theData.appId ? theData.appId : '',
                "img_url":theData.imgUrl,
                "link":theData.link,
                "desc":theData.desc,
                "title":theData.title,
                "img_width":"120",
                "img_height":"120"
            }, function (resp) {
                switch (resp.err_msg) {
                    // send_app_msg:cancel 用户取消
                    case 'send_app_msg:cancel':
                        callbacks.cancel && callbacks.cancel(resp);
                        break;
                    // send_app_msg:fail 发送失败
                    case 'send_app_msg:fail':
                        callbacks.fail && callbacks.fail(resp);
                        break;
                    // send_app_msg:confirm 发送成功
                    case 'send_app_msg:confirm':
                    case 'send_app_msg:ok':
                        callbacks.confirm && callbacks.confirm(resp);
                        break;
                }
                // 无论成功失败都会执行的回调
                callbacks.all && callbacks.all(resp);
            });
        };
        WeixinJSBridge.on('menu:share:appmessage', function (argv) {
            if (callbacks.async && callbacks.ready) {
                if(!callbacks.__dataLoadedFuncInited) {
                    var loadedCb = callbacks.dataLoaded || new Function();
                    callbacks.dataLoaded = function (newData) {
                        loadedCb(newData);
                        sendAppMessage(newData);
                    };
                    callbacks.__dataLoadedFuncInited = true;
                }
                // 然后就绪
                callbacks.ready && callbacks.ready(argv);
            } else {
                // 就绪状态
                callbacks.ready && callbacks.ready(argv);
                sendAppMessage(data);
            }
        });
    }

    /**
     * 分享到腾讯微博
     * @param       {Object}    data       待分享的信息
     * @p-config    {String}    imageUrl   图片地址
     * @p-config    {String}    link       链接地址
     * @p-config    {String}    desc       描述
     * @p-config    {String}    title      分享的标题
     *
     * @param       {Object}    callbacks  相关回调方法
     * @p-config    {Boolean}   async                   ready方法是否需要异步执行,默认false
     * @p-config    {Function}  ready(argv)             就绪状态
     * @p-config    {Function}  dataLoaded(data)        数据加载完成后调用,async为true时有用,也可以为空
     * @p-config    {Function}  cancel(resp)    取消
     * @p-config    {Function}  fail(resp)      失败
     * @p-config    {Function}  confirm(resp)   成功
     * @p-config    {Function}  all(resp)       无论成功失败都会执行的回调
     */
    function weixinShareWeibo(data, callbacks) {
        callbacks = callbacks || {};
        var shareWeibo = function (theData) {
            WeixinJSBridge.invoke('shareWeibo', {
                "content":theData.desc,
                "link":theData.link,
                "img_url":theData.imgUrl,
                "title":theData.title,
                "img_width":"120",
                "img_height":"120"
            }, function (resp) {
                switch (resp.err_msg) {
                    // share_weibo:cancel 用户取消
                    case 'share_weibo:cancel':
                        callbacks.cancel && callbacks.cancel(resp);
                        break;
                    // share_weibo:fail 发送失败
                    case 'share_weibo:fail':
                        callbacks.fail && callbacks.fail(resp);
                        break;
                    // share_weibo:confirm 发送成功
                    case 'share_weibo:confirm':
                    case 'share_weibo:ok':
                        callbacks.confirm && callbacks.confirm(resp);
                        break;
                }
                // 无论成功失败都会执行的回调
                callbacks.all && callbacks.all(resp);
            });
        };
        WeixinJSBridge.on('menu:share:weibo', function (argv) {
            if (callbacks.async && callbacks.ready) {
                if(!callbacks.__dataLoadedFuncInited) {
                    var loadedCb = callbacks.dataLoaded || new Function();
                    callbacks.dataLoaded = function (newData) {
                        loadedCb(newData);
                        shareWeibo(newData);
                    };
                    callbacks.__dataLoadedFuncInited = true;
                }
                // 然后就绪
                callbacks.ready && callbacks.ready(argv);
            } else {
                // 就绪状态
                callbacks.ready && callbacks.ready(argv);
                shareWeibo(data);
            }
        });
    }

    /**
     * 调起微信Native的图片播放组件。
     * 这里必须对参数进行强检测,如果参数不合法,直接会导致微信客户端crash
     * 
     * @param {String} curSrc 当前播放的图片地址
     * @param {Array} srcList 图片地址列表
     */
    function imagePreview(curSrc,srcList) {
        if(!curSrc || !srcList || srcList.length == 0) {
            return;
        }
        WeixinJSBridge.invoke('imagePreview', {
            'current' : curSrc,
            'urls' : srcList
        });
    }

    /**
     * 显示网页右上角的按钮
     */
    function showOptionMenu() {
        WeixinJSBridge.call('showOptionMenu');
    }


    /**
     * 隐藏网页右上角的按钮
     */
    function hideOptionMenu() {
        WeixinJSBridge.call('hideOptionMenu');
    }

    /**
     * 显示底部工具栏
     */
    function showToolbar() {
        WeixinJSBridge.call('showToolbar');
    }

    /**
     * 隐藏底部工具栏
     */
    function hideToolbar() {
        WeixinJSBridge.call('hideToolbar');
    }

    /**
     * 返回如下几种类型:
     *
     * network_type:wifi     wifi网络
     * network_type:edge     非wifi,包含3G/2G
     * network_type:fail     网络断开连接
     * network_type:wwan     2g或者3g
     *
     * 使用方法:
     * WeixinApi.getNetworkType(function(networkType){
     *
     * });
     *
     * @param callback
     */
    function getNetworkType(callback) {
        if (callback && typeof callback == 'function') {
            WeixinJSBridge.invoke('getNetworkType', {}, function (e) {
                // 在这里拿到e.err_msg,这里面就包含了所有的网络类型
                callback(e.err_msg);
            });
        }
    }

    /**
     * 当页面加载完毕后执行,使用方法:
     * WeixinApi.ready(function(Api){
     *     // 从这里只用Api即是WeixinApi
     * });
     * @param readyCallback
     */
    function wxJsBridgeReady(readyCallback) {
        if (readyCallback && typeof readyCallback == 'function') {
            var Api = this;
            var wxReadyFunc = function () {
                readyCallback(Api);
            };
            if (typeof window.WeixinJSBridge == "undefined"){
                if (document.addEventListener) {
                    document.addEventListener('WeixinJSBridgeReady', wxReadyFunc, false);
                } else if (document.attachEvent) {
                    document.attachEvent('WeixinJSBridgeReady', wxReadyFunc);
                    document.attachEvent('onWeixinJSBridgeReady', wxReadyFunc);
                }
            }else{
                wxReadyFunc();
            }
        }
    }

    return {
        version         :"1.4",
        ready           :wxJsBridgeReady,
        shareToTimeline :weixinShareTimeline,
        shareToWeibo    :weixinShareWeibo,
        shareToFriend   :weixinSendAppMessage,
        showOptionMenu  :showOptionMenu,
        hideOptionMenu  :hideOptionMenu,
        showToolbar     :showToolbar,
        hideToolbar     :hideToolbar,
        getNetworkType  :getNetworkType,
        imagePreview    :imagePreview
    };
})();

转自:https://github.com/zxlie/WeixinApi/blob/master/WeixinApi.js