基于JS抓取某高校附近共享单车位置 使用web方式展示位置变化代码实例

效果如图

使用了高德地图api：

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

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