JavaScript

超轻量级php框架startmvc

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

更新时间:2020-09-09 05:00:02 作者:startmvc
效果如图使用了高德地图API:https://lbs.amap.com/api/javascript-api/example/marker/massmarksjs代码如下:

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

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js 抓取 共享单车 位置