微信分享代码，朋友圈分享的js代码

function onBridgeReady() {    var mainTitle="分享啦！",        mainDesc="分享说明",        mainURL="http://www.baidu.com",//url的绝对地址        mainImgUrl= "http://www.baidu.com/1417171328201678646.jpg";//图片的绝对地址    //转发朋友圈    WeixinJSBridge.on("menu:share:timeline", function(e) {        var data = {            img_url:mainImgUrl,            img_width: "120",            img_height: "120",            link: mainURL,            //desc这个属性要加上，虽然不会显示，但是不加暂时会导致无法转发至朋友圈，            desc: mainDesc,            title: mainTitle        };        WeixinJSBridge.invoke("shareTimeline", data, function(res) {            WeixinJSBridge.log(res.err_msg)        });    });    //同步到微博    WeixinJSBridge.on("menu:share:weibo", function() {        WeixinJSBridge.invoke("shareWeibo", {            "content": mainDesc,            "url": mainURL        }, function(res) {            WeixinJSBridge.log(res.err_msg);        });    });    //分享给朋友    WeixinJSBridge.on('menu:share:appmessage', function(argv) {        WeixinJSBridge.invoke("sendAppMessage", {            img_url: mainImgUrl,            img_width: "120",            img_height: "120",            link: mainURL,            desc: mainDesc,            title: mainTitle        }, function(res) {            WeixinJSBridge.log(res.err_msg)        });    });};//执行document.addEventListener('WeixinJSBridgeReady', function() {    onBridgeReady();});