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

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);    }  }); }