抓取某高校附近共享单车位置，并使用web方式展示过去几天的位置变化

• 效果如图
• 
• 使用了高德地图API：https://lbs.amap.com/api/javascript-api/example/marker/massmarks
• js代码如下：

• function MapOperate() {
   
  }
   
  MapOperate.prototype.listensubmit = function () {
      var self = this;
      var submitBut = $(".submit-btn");
   
      var time_id = $("#time-id");
      var time_now = new Date(time_id.html());
   
      submitBut.click(function () {
          var btn = $(this);
          var data_id = btn.attr('data-id');
          var datas = self.format(time_now, "yyyy-MM-dd HH:mm");
          switch (data_id) {
              case data_id = "a":
                  console.log("a");
                  time_now = new Date(time_id.html());
                  var t = time_now.getTime();
                  t -= 1900000;
                  datas = new Date(t);
                  datas = self.format(datas, "yyyy-MM-dd HH:mm");
                  break;
              case data_id = "b":
                  console.log("b");
                  time_now = new Date(time_id.html());
                  var t = time_now.getTime();
                  t -= 120000;
                  datas = new Date(t);
                  datas = self.format(datas, "yyyy-MM-dd HH:mm");
                  break;
              case data_id = "c":
                  console.log("c");
                  datas = "2019-05-05 12:01";
                  break;
              case data_id = "d":
                  console.log("d");
                  time_now = new Date(time_id.html());
                  var t = time_now.getTime();
                  t += 120000;
                  datas = new Date(t);
                  datas = self.format(datas, "yyyy-MM-dd HH:mm");
                  break;
              case data_id = "e":
                  console.log("e");
                  time_now = new Date(time_id.html());
                  var t = time_now.getTime();
                  t += 1900000;
                  datas = new Date(t);
                  datas = self.format(datas, "yyyy-MM-dd HH:mm");
                  break;
   
          }
          console.log(datas);
          var div = document.getElementById("time-id");
          div.innerText = datas;
   
          $.ajax({
              type: 'post',
              async: false,
              url: '/index',
              data: {
                  "datas": datas,
              },
              success: function (result) {
                  //stringify()用于从一个对象解析出字符串
                  // jsonData = JSON.stringify(result['result']);
                  // console.log(jsonData);
                  //JSON.parse用于从一个字符串中解析出json对象
                  var map = new AMap.Map('container', {
                      zoom:15,
                      center: [119.03797, 33.548503]
                  });
                  var jsondata = JSON.stringify(result['result']);
                  var dt = JSON.parse(jsondata);
                  if (dt.length > 0) {
                      var style = [{
                          url: 'https://a.amap.com/jsapi_demos/static/images/mass0.png',
                          anchor: new AMap.Pixel(6, 6),
                          size: new AMap.Size(8, 8)
                      }, {
                          url: 'https://a.amap.com/jsapi_demos/static/images/mass0.png',
                          anchor: new AMap.Pixel(3, 3),
                          size: new AMap.Size(8, 8)
                      }, {
                          url: 'https://a.amap.com/jsapi_demos/static/images/mass0.png',
                          anchor: new AMap.Pixel(4, 4),
                          size: new AMap.Size(8, 8)
                      }
                      ];
                      var massMarks = [];
                      for (var i = 0; i < dt.length; i++) {
                          var point = {'lnglat': [dt[i][0], dt[i][1]], 'name': "1", 'id': i};
                          massMarks.push(point);
                      }
                      var mass = new AMap.MassMarks(massMarks, {
                          opacity: 0.8,
                          zIndex: 111,
                          cursor: 'pointer',
                          style: style
                      });
   
                      var marker = new AMap.Marker({content: ' ', map: map});
                      mass.on('mouseover', function (e) {
                          marker.setPosition(e.data.lnglat);
                          marker.setLabel({content: e.data.name})
                      });
                      mass.setMap(map);
   
                  }
              }
          });
   
      });
  };
   
  MapOperate.prototype.run = function () {
      var self = this;
      self.listensubmit();
  };
   
  MapOperate.prototype.tool = function (ResultList) {
      // 创建地图实例
      var map = new AMap.Map("container", {
          zoom: 13,
          center: [119.038, 33.548],
          resizeEnable: true,
          mapStyle: 'amap://styles/whitesmoke'
      });
      var positions = ResultList;
      var anchor = [
          'bottom-left',
          'bottom-center',
          'bottom-right',
          'middle-left',
          'center',
          'middle-right',
          'top-left',
          'top-center',
          'top-right'
      ];
      var pos_icon = [];
      var pos_marker = [];
      var icon = [];
      var marker = [];
      for (var i = 0; i < 100; i++) {
          // 创建一个 Icon
          pos_icon[i] = new AMap.Icon({
              // 图标尺寸
              size: new AMap.Size(12, 12),
              // 图标的取图地址
              image: '//a.amap.com/jsapi_demos/static/demo-center/marker/marker.png',
              // 图标所用图片大小
              imageSize: new AMap.Size(12, 12),
          });
   
          // 将 Icon 传入 marker
          pos_marker[i] = new AMap.Marker({
              position: positions[i],
              icon: pos_icon[i],
              anchor: 'center', //设置锚点
              offset: new AMap.Pixel(0, 0) //设置偏移量
          });
          map.add(pos_marker[i]);
   
      }
  };
   
  $(function () {
      var map = new MapOperate();
      map.run();
  });
   
  MapOperate.prototype.format = function (now, mask) {
   
      var d = now;
      var zeroize = function (value, length) {
          if (!length) length = 2;
          value = String(value);
          for (var i = 0, zeros = ''; i < (length - value.length); i++) {
              zeros += '0';
          }
          return zeros + value;
      };
   
      return mask.replace(/"[^"]*"|'[^']*'|\b(?:d{1,4}|m{1,4}|yy(?:yy)?|([hHMstT])\1?|[lLZ])\b/g, function ($0) {
          switch ($0) {
              case 'd':
                  return d.getDate();
              case 'dd':
                  return zeroize(d.getDate());
              case 'ddd':
                  return ['Sun', 'Mon', 'Tue', 'Wed', 'Thr', 'Fri', 'Sat'][d.getDay()];
              case 'dddd':
                  return ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'][d.getDay()];
              case 'M':
                  return d.getMonth() + 1;
              case 'MM':
                  return zeroize(d.getMonth() + 1);
              case 'MMM':
                  return ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'][d.getMonth()];
              case 'MMMM':
                  return ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'][d.getMonth()];
              case 'yy':
                  return String(d.getFullYear()).substr(2);
              case 'yyyy':
                  return d.getFullYear();
              case 'h':
                  return d.getHours() % 12 || 12;
              case 'hh':
                  return zeroize(d.getHours() % 12 || 12);
              case 'H':
                  return d.getHours();
              case 'HH':
                  return zeroize(d.getHours());
              case 'm':
                  return d.getMinutes();
              case 'mm':
                  return zeroize(d.getMinutes());
              case 's':
                  return d.getSeconds();
              case 'ss':
                  return zeroize(d.getSeconds());
              case 'l':
                  return zeroize(d.getMilliseconds(), 3);
              case 'L':
                  var m = d.getMilliseconds();
                  if (m > 99) m = Math.round(m / 10);
                  return zeroize(m);
              case 'tt':
                  return d.getHours() < 12 ? 'am' : 'pm';
              case 'TT':
                  return d.getHours() < 12 ? 'AM' : 'PM';
              case 'Z':
                  return d.toUTCString().match(/[A-Z]+$/);
              // Return quoted strings with the surrounding quotes removed
              default:
                  return $0.substr(1, $0.length - 2);
          }
      });
   
  }

  　　

• 项目地址：https://github.com/longbigbeard/Hellobike_webShow