这里用的是jweixin-1.3.2.js

 trigger: function (res) {

     //判断分享的状态，好友、朋友圈

      localStorage.setItem("share_type",1);

},

//单独页面微信分享功能

var methods={

    wxShare: function (shareImg, shareTitle, shareDesc, shareUrl,callBack,tipsCon) {

        var url = window.location.href;

        var wcConfig;

        methods.ajax("/index.php/Wechat/GetJssdk/getJssdkConfig", {

            url: url

        }, function (res) {

            wcConfig = res;

            setConfig();

        });

        function setConfig() {

            wx.config({

                debug: false,

                appId: wcConfig.data.appId,

                timestamp: wcConfig.data.timestamp,

                nonceStr: wcConfig.data.nonceStr,

                signature: wcConfig.data.signature,

                jsApiList: [

                    'onMenuShareQQ',

                    'uploadImage',

                    'chooseImage',

                    'onMenuShareTimeline',

                    'onMenuShareAppMessage',

                    'startRecord',

                    'stopRecord',

                    'translateVoice',

                    'chooseCard',

                    'openCard',

                    'addCard'

                ]

            });

            var wxData = {

                url: shareUrl ? location.protocol + "//" + location.host + shareUrl : url,

                imgurl: location.protocol + "//" + location.host + (shareImg ? shareImg : "/shop-m/public/images/share_icon.jpg"),

                title: shareTitle ? shareTitle : "默认标题",

                desc: shareDesc ? shareDesc : "默认描述"

            }

　　　　　　　//分享好友

            var weixinShare = {

                title: wxData.title,

                desc: wxData.desc,

                link: wxData.url,

                imgUrl: wxData.imgurl,

                type: '',

                trigger: function (res) {

                    // console.log('用户点击发送给朋友');

                    localStorage.setItem("share_type",2);

                },

                success: function(res) {

                   if(callBack){

                      if(tipsCon){

                         methods.confirm(tipsCon);

                      }else{

                         methods.prompt("分享成功");

                      }

                      callBack();

                   };

            },

            };

            var qqShare = {

                title: wxData.title,

                desc: wxData.desc,

                link: url,

                imgUrl: wxData.imgurl,

                success: function() {

                   if(callBack){

                      if(tipsCon){

                         methods.confirm(tipsCon);

                      }else{

                         methods.prompt("分享成功");

                      }

                      callBack();

                   };

            },

            };

//分享朋友圈

            var friendShare = {

                title: wxData.title,

                link: wxData.url,

                imgUrl: wxData.imgurl,

                trigger: function (res) {

                    console.log('用户点击分享到朋友圈');

                    localStorage.setItem("share_type",1);

                },

                success: function(res) {

                   if(callBack){

                      if(tipsCon){

                         methods.confirm(tipsCon);

                      }else{

                         methods.prompt("分享成功");

                        }

                      callBack();

                   };

            },

            };

            wx.ready(function () {

                wx.onMenuShareTimeline(friendShare);

                wx.onMenuShareAppMessage(weixinShare);

                wx.onMenuShareQQ(qqShare);

            });

        }

    }

}

　　 //调用方法

    //微信分享，先判断是不是微信，设置分享内容shareImg, shareTitle, shareDesc, shareUrl,callBack分享成功后回调函数,tipsCon提示语

    var userAgentInfo = navigator.userAgent.toLowerCase();

    if (userAgentInfo.match(/MicroMessenger/i) == 'micromessenger') {

        methods.wxShare("/shop-m/page/activity/2019-0520/images/share_icon.jpg",

            "帮他助力",

            "有你的助力会更有信心哦！",

            "/shop-m/page/activity/2019-0720/buy-new-car/helpAssistance.html?fromOpenid="+fromOpenid+"&"+"fromUserid="+fromUserid,

            function(){

                console.log('分享成功')

            })

    }