WeChat JS-SDK simple application implementation based on nodejs

 = {
  grant_type: 'client_credential',
  appid: 'xxxxxxxxxxxxxxx',
  secret: 'xxxxxxxxxxxxxxxxxxxxxxxxxx',
  noncestr:'Wm3WZYTPz0wzccnW',
  accessTokenUrl:'/cgi-bin/token',
  ticketUrl:'/cgi-bin/ticket/getticket',
  cache_duration:1000*60*60*24 //Cache length is 24 hours
}

var request = require('request'),
  cache = require('memory-cache'),
  sha1 = require('sha1'),
  config = require('../config/');

 = function (url,callback) {
  var noncestr = ,
    timestamp = (()/1000), //accurate to the second
    jsapi_ticket;
  if(('ticket')){
    jsapi_ticket = ('ticket');
    ('1' + 'jsapi_ticket=' + jsapi_ticket + '&noncestr=' + noncestr + '&timestamp=' + timestamp + '&url=' + url);
    callback({
      noncestr:noncestr,
      timestamp:timestamp,
      url:url,
      jsapi_ticket:jsapi_ticket,
      signature:sha1('jsapi_ticket=' + jsapi_ticket + '&noncestr=' + noncestr + '&timestamp=' + timestamp + '&url=' + url)
    });
  }else{
    request( + '?grant_type=' + config.grant_type + '&appid=' +  + '&secret=' +  ,function(error, response, body){
      if (!error &&  == 200) {
        var tokenMap = (body);
        request( + '?access_token=' + tokenMap.access_token + '&type=jsapi', function(error, resp, json){
          if (!error &&  == 200) {
            var ticketMap = (json);
            ('ticket',,config.cache_duration); // Add to cache
            ('jsapi_ticket=' +  + '&noncestr=' + noncestr + '&timestamp=' + timestamp + '&url=' + url);
            callback({
              noncestr:noncestr,
              timestamp:timestamp,
              url:url,
              jsapi_ticket:,
              signature:sha1('jsapi_ticket=' +  + '&noncestr=' + noncestr + '&timestamp=' + timestamp + '&url=' + url)
            });
          }
        })
      }
    })
  }
}

('refresh').onclick = function(){();}

/**
 * The following is mostly taken from the official demos
 /* /* /* The following is mostly extracted from the official demos.
**/
({
  debug: true, // Enable debug mode, the return value of all api calls will be alerted on the client side, if you want to see the incoming parameters, you can open it on the pc side, the parameter information will be typed out through the log, and will only be printed on the pc side.
  appId: appId, // Required, unique identifier for the public number
  timestamp: timestamp, // Mandatory, time stamp for signature generation
  nonceStr: nonceStr, // Mandatory, random string to generate signature
  signature: signature,// Mandatory, signature, see appendix 1
  jsApiList: ['checkJsApi',
    'onMenuShareTimeline',
    'onMenuShareAppMessage',
    'onMenuShareQQ',
    'onMenuShareWeibo',
    'hideMenuItems',
    'showMenuItems',
    'hideAllNonBaseMenuItem',
    'showAllNonBaseMenuItem',
    'translateVoice',
    'startRecord',
    'stopRecord',
    'onRecordEnd',
    'playVoice',
    'pauseVoice',
    'stopVoice',
    'uploadVoice',
    'downloadVoice',
    'chooseImage',
    'previewImage',
    'uploadImage',
    'downloadImage',
    'getNetworkType',
    'openLocation',
    'getLocation',
    'hideOptionMenu',
    'showOptionMenu',
    'closeWindow',
    'scanQRCode',
    'chooseWXPay',
    'openProductSpecificView',
    'addCard',
    'chooseCard',
    'openCard'] // Mandatory, list of JS interfaces to be used.
});

(function(){
 // 1 Determine if the current version supports the specified JS interface, supports batch determination.
 ('#checkJsApi').onclick = function () {
  ({
   jsApiList: [
    'getNetworkType',
    'previewImage'
   ],
   success: function (res) {
    alert((res));
   }
  });
 };

  // 2. Sharing interface
 // 2.1 Listening for "share with friends", button clicks, customized share content, and share result interfaces.
 ('#onMenuShareAppMessage').onclick = function () {
  ({
   title: 'Son of the Internet',
   desc: 'It was only in the process of growing up that I slowly realized that all the things around me, all the things people told me, the things that were supposedly the way they were, the things that were destined to be the way they were, they didn't really have to be the way they were, and that things could be changed. More importantly, some things should be changed since they are wrong.',
   link: '/subject/25785114/',
   imgUrl: '/jssdk/images/',
   trigger: function (res) {
    // Don't try to use ajax asynchronous request in the trigger to modify the content of this share, because the client-side share operation is a synchronous operation, and the packet return using ajax will not have been returned yet.
    alert('User clicks send to friend');
   },
   success: function (res) {
    alert('Shared');
   },
   cancel: function (res) {
    alert('Canceled');
   },
   fail: function (res) {
    alert((res));
   }
  });
  alert('Registered for "Send to Friend" status event');
 };

  // 5 Picture Interface
 // 5.1 Taking pictures, local selection
 var images = {
  localId: [],
  serverId: []
 };
 ('#chooseImage').onclick = function () {
  ({
   success: function (res) {
     = ;
    alert('Selected ' +  + ' Pictures ');
   }
  });
 };
  // 5.2 Image Preview
 ('#previewImage').onclick = function () {
  ({
   current: '/view/photo/photo/public/',
   urls: [
    '/view/photo/photo/public/',
    '/view/photo/photo/public/',
    '/view/photo/photo/public/'
   ]
  });
 };

  // 7.2 Getting the current geographic location
 ('#getLocation').onclick = function () {
  ({
   success: function (res) {
    alert((res));
   },
   cancel: function (res) {
    alert('User refused to authorize access to geolocation');
   }
  });
 };

  // 9 WeChat Native Interface
 // 9.1.1 Scanning a QR code and returning the result
 ('#scanQRCode0').onclick = function () {
  ();
 };

});

(function(res){
  (res)
});