微信发送链接指定图片，标题，描述

<script type="text/javascript">
    var imgUrl = "http://image.ehmall.com.cn/news/2015/03/24/logo.jpg";
    var lineLink = window.location.href;  //访问的url
    var descContent = ‘宜和购物微信卡券送不停！‘;//描述
    var shareTitle = ‘宜和购物微信卡券送不停！‘;//标题
    var appid = ‘‘;//你的appid，在你的微信公众平台访问
    function shareFriend() {
        WeixinJSBridge.invoke(‘sendAppMessage‘, {
            "appid": appid,

            "img_url": imgUrl,

            "img_width": "200",

            "img_height": "200",

            "link": lineLink,

            "desc": descContent,

            "title": shareTitle

        }, function (res) {
        })
    }
    function shareTimeline() {

        WeixinJSBridge.invoke(‘shareTimeline‘, {

            "img_url": imgUrl,

            "img_width": "200",

            "img_height": "200",

            "link": lineLink,

            "desc": descContent,

            "title": shareTitle

        }, function (res) {

        });
    }
    function shareWeibo() {
        WeixinJSBridge.invoke(‘shareWeibo‘, {
            "content": descContent,
            "url": lineLink
        }, function (res) {
        });

    }
    // 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);
</script>

直接嵌入你的网页即可