微信分享到朋友圈，或者发送给朋友

weixin_share.javascript

var imgUrl =
        'http://www.bigertech.com/content/images/2014/Dec/wallhaven-34414-1.jpg';
    var lineLink = 'http://www.bigertech.com';
    var descContent = "这是笔戈科技的博客"; // 小于 100个字
    var shareTitle = '分享标题'; // 小于 30个字
    var appid = '';

    function shareFriend() {
        WeixinJSBridge.invoke('sendAppMessage', {
            "appid": appid,
            "img_url": imgUrl,
            "img_width": "200",
            "img_height": "200",
            "link": lineLink,
            "desc": descContent,
            "title": shareTitle
        }, function(res) {
            //_report('send_msg', res.err_msg);
        })
    }

    function shareTimeline() {
        WeixinJSBridge.invoke('shareTimeline', {
            "img_url": imgUrl,
            "img_width": "200",
            "img_height": "200",
            "link": lineLink,
            "desc": descContent,
            "title": shareTitle
        }, function(res) {
            //_report('timeline', res.err_msg);
        });
    }

    function shareWeibo() {
            WeixinJSBridge.invoke('shareWeibo', {
                "content": descContent,
                "url": lineLink,
            }, function(res) {
                //_report('weibo', res.err_msg);
            });
        }
        // 当微信内置浏览器完成内部初始化后会触发WeixinJSBridgeReady事件。
    document.addEventListener('WeixinJSBridgeReady', function onBridgeReady() {
        // 发送给好友
        WeixinJSBridge.on('menu:share:appmessage', function(argv) {
            shareFriend();
        });
        // 分享到朋友圈
        WeixinJSBridge.on('menu:share:timeline', function(argv) {
            shareTimeline();
        });
        // 分享到微博
        WeixinJSBridge.on('menu:share:weibo', function(argv) {
            shareWeibo();
        });
    }, false);