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<head> <meta charset="UTF-8"> <title>百度地图DEMO</title> <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=你申请的AK"></script> <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function() {
var queryHouseOutline = function(hid, callback) { var baseURL = 'http://map.baidu.com/?reqflag=pcmap&coord_type=3&from=webmap&qt=ext&ext_ver=new&l=18'; var url = baseURL + "&uid=" + hid; callback && (window.queryHouseOutlineCallback = callback); $.ajax({ type: "get", async: false, url: url, dataType: "jsonp", jsonpCallback: "queryHouseOutlineCallback", success: function(datas) {} }); };
/** * 模糊查询小区信息, 无返回值 * @param {} house 小区名称 * @param {} city 所属城市名称 * @param {} ak 百度地图AK * @param {} callback 回调函数,该函数可以接收到请求的返回值 */ var queryHouse = function(house, city, ak, callback) { var baseURL = 'http://api.map.baidu.com/place/v2/search?output=json&scope=2'; var url = baseURL + "&q=" + house + "®ion=" + city + "&ak=" + ak; callback && (window.queryHouseCallback = callback); $.ajax({ type: "get", async: false, url: url, dataType: "jsonp", jsonpCallback: "queryHouseCallback", success: function(datas) {} }); };
/** * 墨卡托坐标转百度坐标 * @param {} coordinate * @return {} */ var coordinateToPoints = function(map, coordinate) { var points = []; if (coordinate) { var arr = coordinate.split(";"); if (arr) { for (var i = 0; i < arr.length; i++) { var coord = arr[i].split(","); if (coord && coord.length == 2) { var mctXY = new BMap.Pixel(coord[0], coord[1]); var project = map.getMapType().getProjection(); var point = project.pointToLngLat(mctXY); points.push(new BMap.Point(point.lng, point.lat)); } } } } return points; }; /** * 墨卡托坐标解析 * @param {} mocator * @return {} */ var parseGeo = function(mocator) { if (typeof mocator != 'string') { return {}; } var t = mocator.split("|"); var n = parseInt(t[0]); var i = t[1]; var r = t[2]; var o = r.split(";"); if (n === 4) { for (var a = [], s = 0; s < o.length - 1; s++) { "1" === o[s].split("-")[0] && a.push(o[s].split("-")[1]); } o = a; o.push(""); } var u = []; switch (n) { case 1: u.push(o[0]); break; case 2: case 3: case 4: for (var s = 0; s < o.length - 1; s++) { var l = o[s]; if (l.length > 100) { l = l.replace(/(-?[1-9]\d*\.\d*|-?0\.\d*[1-9]\d*|-?0?\.0+|0|-?[1-9]\d*),(-?[1-9]\d*\.\d*|-?0\.\d*[1-9]\d*|-?0?\.0+|0|-?[1-9]\d*)(,)/g, "$1,$2;"); u.push(l); } else { for (var c = [], d = l.split(","), f = 0; f < d.length; f += 2) { var p = d[f]; var h = d[f + 1]; c.push(p + "," + h); } u.push(c.join(";")) } } break; default: break; }
if (u.length <= 1) { u = u.toString(); }
var result = { type: n, bound: i, points: u }; return result; };
var map = new BMap.Map("allmap"); // 创建Map实例 map.centerAndZoom("北京", 19); map.addControl(new BMap.MapTypeControl()); //添加地图类型控件
map.enableScrollWheelZoom(false); //开启鼠标滚轮缩放
/** * 第一个参数是城市名,第二参数是小区名 */ var showArea = function(city, area) { queryHouse(area, city, "你申请的AK", function(data) { if (data.message == 'ok') { var houses = data.results; if (houses && houses.length > 0) { var house = houses[0]; queryHouseOutline(house.uid, function(houseOutline) { var geo = houseOutline.content.geo; if (!geo) { var location = house.location; var point = new BMap.Point(location.lng, location.lat); map.centerAndZoom(point, 19); var marker = new BMap.Marker(point); marker.setAnimation(BMAP_ANIMATION_BOUNCE); map.addOverlay(marker); } else { map.clearOverlays(); var geoObj = parseGeo(geo); //边界点 var points = coordinateToPoints(map, geoObj.points); var ply = new BMap.Polygon(points, { strokeWeight: 2, strokeColor: "#F01B2D", strokeOpacity: 0.9, fillColor: "transparent" }); //建立多边形覆盖物 map.addOverlay(ply); //添加覆盖物 map.setViewport(ply.getPath()); //调整视野 } }); } } }); };
showArea($('#cityId').val(), $('#areaId').val());
$('#showBtn').click(function() { debugger; showArea($('#cityId').val(), $('#areaId').val()); });
$("#areaId").keydown(function(e) { if (event.keyCode == "13") { showArea($('#cityId').val(), $('#areaId').val()); } }) }); </script> </head>
<body> <table> <tr> <td>城市:</td> <td> <input id="cityId" type="text" value="北京" /> </td> <td>小区:</td> <td> <input id="areaId" type="text" value="故宫博物院" /> </td> <td> <button id="showBtn">显示</button> </td> </tr> </table> <div id="allmap" style="width: 90vw; height: 90vh;"></div> </body>
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