1.安装weixin-js-sdk（目前使用的是1.6.0） 2.新建一个js文件,在main.js中引入** **3.封装方法****

  wxShare.share = function (appId, timestamp, nonceStr, signature, options,callBack) {
    console.log('9999', appId, timestamp, nonceStr, signature, options);
    wx.config({
      // 微信签名
      debug: false,
      appId: appId,
      timestamp: timestamp,
      nonceStr: nonceStr,
      signature: signature,
      jsApiList: ["onMenuShareAppMessage","onMenuShareTimeline"],
      // 下面的是新的微信分享接口，不支持回调
      // jsApiList: ["updateAppMessageShareData","updateTimelineShareData"],
    });
    // "onMenuShareAppMessage", "onMenuShareTimeline", "showAllNonBaseMenuItem"

    wx.ready(function () {
      console.log('readyreadyready');
      wx.showOptionMenu();
      // 2. 分享接口
      // 2.1 监听“分享给朋友”，按钮点击、自定义分享内容及分享结果接口
      // onMenuShareAppMessage
      wx.onMenuShareAppMessage({
        title: options.title, //分享标题
        desc: options.desc, // 分享描述
        link: options.link, // 分享链接
        imgUrl: options.imgUrl, // 分享图标
        success: function (res) {
          //  分享成功的回调;用户分享后记录用户分享动作
          console.log("微信分享成功");
        },
        cancel: function (res) {
          console.log("微信分享已取消");
        },
        fail: function (res) {
        },
      });

      // //分享给朋友圈onMenuShareTimeline
      wx.onMenuShareTimeline({
        title: options.title,
        link: options.link,
        imgUrl: options.imgUrl,
        success: function (res) {
          //  分享成功的回调;用户分享后记录用户分享动作
          //alert('已分享');
        },
        cancel: function (res) {
          //alert('已取消');
        },
        fail: function (res) {
        },
      });
    });
  }
// 隐藏分享方法
   wxShare.notShare = function (appId, timestamp, nonceStr, signature) {
    console.log('隐藏分享', appId, timestamp, nonceStr, signature);
    wx.config({
      debug: false,
      appId: appId,
      timestamp: timestamp,
      nonceStr: nonceStr,
      signature: signature,
      jsApiList: ["hideMenuItems"],
    });
    wx.ready(function () {
      wx.hideMenuItems({
        menuList: ['menuItem:share:appMessage', 'menuItem:share:timeline', 'menuItem:share:qq', 'menuItem:share:QZone', 'menuItem:openWithSafari', 'menuItem:openWithQQBrowser', 'menuItem:favorite']
      })
    });
    wx.error(function (res) {
      console.log(res, "分享-错误信息");
    });
  }

4.在需要分享的页面调用**** 调用接口，拿到签名，appId，timestamp，nonceStr，signature； options：微信分享的内容(标题，描述，链接，图标)

wxShare.share(this.wxParams.appId, this.wxParams.timestamp, this.wxParams.nonceStr, this.wxParams.signature, options，()=>{
// 回调
});