高德地图/百度地图 api 根据select 选择地点进行位置的显示；

需求：根据select 选择器选择城市地名切换地图位置变化

预期效果：

高德地图API：

思路：根据高德地图api（概述-地图 JS API | 高德地图API）官方实例进行修改

需要获取城市地点的adcode值和城市地点的名称通过AMap.Geocoder()进行获取相关信息，将adcode值和城市地点的名称通过.setCity 和

修改代码：

<select name="" id="courtNameSelect" class="selectClass" style="background-position-x: 150px!important;">
              <option value="哈尔滨冰雪大世界">哈尔滨冰雪大世界</option>
              <option value="大连星海广场">大连星海广场</option>
              <option value="沈阳中街">沈阳中街</option>
            </select>

javascript">$(function () {
  //地图加载
  var map = new AMap.Map("container", {
    resizeEnable: true,
    showMarker: true,
    enableHighAccuracy: true,
    showButton: true,
    panToLocation: true,
  });
  var placeSearch = new AMap.PlaceSearch({
    map: map
  });  //构造地点查询类
  $('#courtNameSelect').change(function () {
    var myValue;
    myValue = $(this).val()
    AMap.plugin('AMap.Geocoder', function () {
      var geocoder = new AMap.Geocoder();
      geocoder.getLocation(myValue, function (status, result) {
        if (result.info === 'OK') {
          const adcodeNum = result.geocodes[0].adcode
          select(adcodeNum, myValue);
        }
      });
    });
  })
  function select (adcodeNum, myValue) {
    placeSearch.setCity(adcodeNum);
    placeSearch.search(myValue);  //关键字查询查询
  }
  map.plugin(["AMap.ToolBar"], function () {
    map.addControl(new AMap.ToolBar());
  });
  if (location.href.indexOf('&guide=1') !== -1) {
    map.setStatus({ scrollWheel: false })
  }
});

百度地图API：

思路：根据高德地图api（地图JS API示例 | 百度地图开放平台）官方实例进行修改

代码

<select name="" id="courtNameSelect" class="selectClass" style="background-position-x: 150px!important;">
              <option value="哈尔滨冰雪大世界">哈尔滨冰雪大世界</option>
              <option value="大连星海广场">大连星海广场</option>
              <option value="沈阳中街">沈阳中街</option>
            </select>

javascript">$(function () {
  console.log($("#courtNameSelect").val())
  // 百度地图API功能
  function G (id) {
    return document.getElementById(id);
  }
  var map = new BMap.Map("l-map");
  const centerPlace = "北京"
  map.centerAndZoom(centerPlace, 12);
  const mrPlace = $("#courtNameSelect").val()
  function myFun () {
    var pp = mrPlace;
    map.centerAndZoom(pp, 18);
    map.addOverlay(new BMap.Marker(pp));
  }
  var local = new BMap.LocalSearch(map, {
    onSearchComplete: myFun
  });
  local.search(mrPlace);
  $('#courtNameSelect').change(function () {
    var myValue;
    myValue = $(this).val()
    map.clearOverlays();    //清除地图上所有覆盖物
    function myFun () {
      var pp = myValue;
      console.log(pp)
      map.centerAndZoom(pp, 18);
      map.addOverlay(new BMap.Marker(pp));
    }
    var local = new BMap.LocalSearch(map, {
      onSearchComplete: myFun
    });
    local.search(myValue);
  })
});

高德地图结合zTree.js多级联动效果实现

引入zTree.js相关js文件以及css文件

<link rel="stylesheet" href="css/index/zTreeStyle.css" type="text/css">
  <link rel="stylesheet" href="css/index/jquery.select.zTree.v1.5.css" type="text/css">
  <script type="text/javascript" src="js/common/jquery.ztree.core.js"></script>
  <script type="text/javascript" src="js/common/jquery.ztree.exhide.js"></script>
  <script type="text/javascript" src="js/common/jquery.select.zTree.v1.5.min.js"></script>

<select id="select2" title="选择"> </select>

javascript">$(function () {
var zNodes = [
        {id: 1, pId: 0, name: "父1 - 展开", open: true},
        {id: 11, pId: 1, name: "父11 - 折叠"},
        {id: 111, pId: 11, name: "叶子节点节点节点111"},
        {id: 113, pId: 11, name: "叶子节点节点节点113"},
        {id: 1131, pId: 113, name: "叶子节点节点节点1131"},
        {id: 1132, pId: 113, name: "叶子节点节点节点1132"},
        {id: 1133, pId: 113, name: "叶子节点节点节点1133"},
        {id: 114, pId: 11, name: "叶子节点节点节点114"},
        {id: 12, pId: 1, name: "父12 - 折叠"},
        {id: 121, pId: 12, name: "叶子节点节点节点121"},
        ...
    ];
  //地图加载
  var map = new AMap.Map("container", {
    resizeEnable: true,
    showMarker: true,
    enableHighAccuracy: true,
    showButton: true,
    panToLocation: true,
  });
  var placeSearch = new AMap.PlaceSearch({
    map: map
  });  //构造地点查询类
  $('.auditdh').click(function () {
    var mrPlace = $("#select2").find('option:selected').text()
    AMap.plugin('AMap.Geocoder', function () {
      var geocoder = new AMap.Geocoder();
      geocoder.getLocation(mrPlace, function (status, result) {
        if (result.info === 'OK') {
          const adcodeNum = result.geocodes[0].adcode
          select(adcodeNum, mrPlace);
        }
      });
    });
  })
  $("#select2").selectZTree({ data: zNodes })
    .on("change", function (e, data) {
      const address = data.address
      $('#placeAddress').html(address)
      var myValue;
      myValue = data.name
      AMap.plugin('AMap.Geocoder', function () {
        var geocoder = new AMap.Geocoder();
        geocoder.getLocation(myValue, function (status, result) {
          if (result.info === 'OK') {
            const adcodeNum = result.geocodes[0].adcode
            select(adcodeNum, myValue);
          }
        });
      });
    });
  function select (adcodeNum, myValue) {
    placeSearch.setCity(adcodeNum);
    placeSearch.search(myValue);  //关键字查询查询
  }
  map.plugin(["AMap.ToolBar"], function () {
    map.addControl(new AMap.ToolBar());
  });
  if (location.href.indexOf('&guide=1') !== -1) {
    map.setStatus({ scrollWheel: false })
  }
});