echarts地图实现地区下钻

今天使用echarts做了一个地图的下钻，上网找了各种资料之后终于完成了！具体代码可以区我的github上观看 https://github.com/yunpengLiang/echarts
下载下来之后不能在本地直接访问，因为使用jquery的$.getJSON获取json，产生了跨域，需要放到项目中使用http开头的访问

$(function () {

    map();


	function map() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('map'));
        //存储切换的每一级地图信息
		var mapStack = [];
		var timeFn = null;
		var curMap = {};
		//初始化地图
		loadMap('100000', 'china');
		/**
		   绑定用户切换地图区域事件
		   cityMap对象存储着地图区域名称和区域的信息(name-code)
		   当mapCode有值,说明可以切换到下级地图
		   同时保存上级地图的编号和名称  
		*/
		myChart.on('click', function(params) {
		    clearTimeout(timeFn);
			//由于单击事件和双击事件冲突，故单击的响应事件延迟250毫秒执行
			timeFn = setTimeout(function(){
			    var name = params.name;
				var mapCode = cityMap[name];
				if (!mapCode) {
					alert('无此区域地图显示');
					return;
				}
				loadMap(mapCode, name);	
				//将上一级地图信息压入mapStack
				mapStack.push({
					mapCode: curMap.mapCode,
					mapName: curMap.mapName
				});	
			}, 250);   
		});
		/**
		   绑定双击事件，并加载上一级地图
		*/
		myChart.on('dblclick', function(params) {
		    //当双击事件发生时，清除单击事件，仅响应双击事件
		    clearTimeout(timeFn);
		    var map = mapStack.pop();
			if (!mapStack.length && !map) {
			    alert('已经到达最上一级地图了');
				return;
			}
			loadMap(map.mapCode, map.mapName);
		});
		var dataValue = [
		     {name: '海门', value: 9},
		     {name: '鄂尔多斯', value: 12},
		     {name: '招远', value: 12},
		     {name: '舟山', value: 12},
		     {name: '齐齐哈尔', value: 14},
		     {name: '盐城', value: 15},
		     {name: '赤峰', value: 16},
		     {name: '青岛', value: 18},
		     {name: '乳山', value: 18},
		     {name: '金昌', value: 19},
		     {name: '泉州', value: 21},
		     {name: '莱西', value: 21},
		     {name: '日照', value: 21},
		     {name: '胶南', value: 22},
		     {name: '南通', value: 23},
		     {name: '拉萨', value: 24},
		     {name: '云浮', value: 24},
		     {name: '梅州', value: 25},
		     {name: '文登', value: 25},
		     {name: '上海', value: 25},
		     {name: '大庆', value: 279}
		];
		var geoCoordMap = {
		    '海门':[121.15,31.89],
		    '鄂尔多斯':[109.781327,39.608266],
		    '招远':[120.38,37.35],
		    '舟山':[122.207216,29.985295],
		    '齐齐哈尔':[123.97,47.33],
		    '盐城':[120.13,33.38],
		    '赤峰':[118.87,42.28],
		    '青岛':[120.33,36.07],
		    '乳山':[121.52,36.89],
		    '金昌':[102.188043,38.520089],
		    '泉州':[118.58,24.93],
		    '莱西':[120.53,36.86],
		    '日照':[119.46,35.42],
		    '胶南':[119.97,35.88],
		    '南通':[121.05,32.08],
		    '拉萨':[91.11,29.97],
		    '云浮':[112.02,22.93],
		    '梅州':[116.1,24.55],
		    '文登':[122.05,37.2],
		    '上海':[121.48,31.22],
		    '攀枝花':[101.718637,26.582347],
		    '威海':[122.1,37.5],
		    '承德':[117.93,40.97],
		    '厦门':[118.1,24.46],
		    '汕尾':[115.375279,22.786211],
		    '潮州':[116.63,23.68],
		    '丹东':[124.37,40.13],
		    '太仓':[121.1,31.45],
		    '曲靖':[103.79,25.51],
		    '烟台':[121.39,37.52],
		    '福州':[119.3,26.08],
		    '瓦房店':[121.979603,39.627114],
		    '即墨':[120.45,36.38],
		    '抚顺':[123.97,41.97],
		    '玉溪':[102.52,24.35],
		    '张家口':[114.87,40.82],
		    '阳泉':[113.57,37.85],
		    '莱州':[119.942327,37.177017],
		    '湖州':[120.1,30.86],
		    '汕头':[116.69,23.39],
		    '昆山':[120.95,31.39],
		    '宁波':[121.56,29.86],
		    '湛江':[110.359377,21.270708],
		    '揭阳':[116.35,23.55],
		    '荣成':[122.41,37.16],
		    '连云港':[119.16,34.59],
		    '葫芦岛':[120.836932,40.711052],
		    '常熟':[120.74,31.64],
		    '东莞':[113.75,23.04],
		    '河源':[114.68,23.73],
		    '淮安':[119.15,33.5],
		    '泰州':[119.9,32.49],
		    '南宁':[108.33,22.84],
		    '营口':[122.18,40.65],
		    '惠州':[114.4,23.09],
		    '江阴':[120.26,31.91],
		    '蓬莱':[120.75,37.8],
		    '韶关':[113.62,24.84],
		    '嘉峪关':[98.289152,39.77313],
		    '广州':[113.23,23.16],
		    '延安':[109.47,36.6],
		    '太原':[112.53,37.87],
		    '清远':[113.01,23.7],
		    '中山':[113.38,22.52],
		    '昆明':[102.73,25.04],
		    '寿光':[118.73,36.86],
		    '盘锦':[122.070714,41.119997],
		    '长治':[113.08,36.18],
		    '深圳':[114.07,22.62],
		    '珠海':[113.52,22.3],
		    '宿迁':[118.3,33.96],
		    '咸阳':[108.72,34.36],
		    '铜川':[109.11,35.09],
		    '平度':[119.97,36.77],
		    '佛山':[113.11,23.05],
		    '海口':[110.35,20.02],
		    '江门':[113.06,22.61],
		    '章丘':[117.53,36.72],
		    '肇庆':[112.44,23.05],
		    '大连':[121.62,38.92],
		    '临汾':[111.5,36.08],
		    '吴江':[120.63,31.16],
		    '石嘴山':[106.39,39.04],
		    '沈阳':[123.38,41.8],
		    '苏州':[120.62,31.32],
		    '茂名':[110.88,21.68],
		    '嘉兴':[120.76,30.77],
		    '长春':[125.35,43.88],
		    '胶州':[120.03336,36.264622],
		    '银川':[106.27,38.47],
		    '张家港':[120.555821,31.875428],
		    '三门峡':[111.19,34.76],
		    '锦州':[121.15,41.13],
		    '南昌':[115.89,28.68],
		    '柳州':[109.4,24.33],
		    '三亚':[109.511909,18.252847],
		    '自贡':[104.778442,29.33903],
		    '吉林':[126.57,43.87],
		    '阳江':[111.95,21.85],
		    '泸州':[105.39,28.91],
		    '西宁':[101.74,36.56],
		    '宜宾':[104.56,29.77],
		    '呼和浩特':[111.65,40.82],
		    '成都':[104.06,30.67],
		    '大同':[113.3,40.12],
		    '镇江':[119.44,32.2],
		    '桂林':[110.28,25.29],
		    '张家界':[110.479191,29.117096],
		    '宜兴':[119.82,31.36],
		    '北海':[109.12,21.49],
		    '西安':[108.95,34.27],
		    '金坛':[119.56,31.74],
		    '东营':[118.49,37.46],
		    '牡丹江':[129.58,44.6],
		    '遵义':[106.9,27.7],
		    '绍兴':[120.58,30.01],
		    '扬州':[119.42,32.39],
		    '常州':[119.95,31.79],
		    '潍坊':[119.1,36.62],
		    '重庆':[106.54,29.59],
		    '台州':[121.420757,28.656386],
		    '南京':[118.78,32.04],
		    '滨州':[118.03,37.36],
		    '贵阳':[106.71,26.57],
		    '无锡':[120.29,31.59],
		    '本溪':[123.73,41.3],
		    '克拉玛依':[84.77,45.59],
		    '渭南':[109.5,34.52],
		    '马鞍山':[118.48,31.56],
		    '宝鸡':[107.15,34.38],
		    '焦作':[113.21,35.24],
		    '句容':[119.16,31.95],
		    '北京':[116.46,39.92],
		    '徐州':[117.2,34.26],
		    '衡水':[115.72,37.72],
		    '包头':[110,40.58],
		    '绵阳':[104.73,31.48],
		    '乌鲁木齐':[87.68,43.77],
		    '枣庄':[117.57,34.86],
		    '杭州':[120.19,30.26],
		    '淄博':[118.05,36.78],
		    '鞍山':[122.85,41.12],
		    '溧阳':[119.48,31.43],
		    '库尔勒':[86.06,41.68],
		    '安阳':[114.35,36.1],
		    '开封':[114.35,34.79],
		    '济南':[117,36.65],
		    '德阳':[104.37,31.13],
		    '温州':[120.65,28.01],
		    '九江':[115.97,29.71],
		    '邯郸':[114.47,36.6],
		    '临安':[119.72,30.23],
		    '兰州':[103.73,36.03],
		    '沧州':[116.83,38.33],
		    '临沂':[118.35,35.05],
		    '南充':[106.110698,30.837793],
		    '天津':[117.2,39.13],
		    '富阳':[119.95,30.07],
		    '泰安':[117.13,36.18],
		    '诸暨':[120.23,29.71],
		    '郑州':[113.65,34.76],
		    '哈尔滨':[126.63,45.75],
		    '聊城':[115.97,36.45],
		    '芜湖':[118.38,31.33],
		    '唐山':[118.02,39.63],
		    '平顶山':[113.29,33.75],
		    '邢台':[114.48,37.05],
		    '德州':[116.29,37.45],
		    '济宁':[116.59,35.38],
		    '荆州':[112.239741,30.335165],
		    '宜昌':[111.3,30.7],
		    '义乌':[120.06,29.32],
		    '丽水':[119.92,28.45],
		    '洛阳':[112.44,34.7],
		    '秦皇岛':[119.57,39.95],
		    '株洲':[113.16,27.83],
		    '石家庄':[114.48,38.03],
		    '莱芜':[117.67,36.19],
		    '常德':[111.69,29.05],
		    '保定':[115.48,38.85],
		    '湘潭':[112.91,27.87],
		    '金华':[119.64,29.12],
		    '岳阳':[113.09,29.37],
		    '长沙':[113,28.21],
		    '衢州':[118.88,28.97],
		    '廊坊':[116.7,39.53],
		    '菏泽':[115.480656,35.23375],
		    '合肥':[117.27,31.86],
		    '武汉':[114.31,30.52],
		    '大庆':[125.03,46.58]
		};
		var convertData = function (data) {
		    var res = [];
		    for (var i = 0; i < data.length; i++) {
		        var geoCoord = geoCoordMap[data[i].name];
		        if (geoCoord) {
		            res.push({
		                name: data[i].name,
		                value: geoCoord.concat(data[i].value)
		            });
		        }
		    }
		    return res;
		};

		function loadMap(mapCode, mapName) {
		    $.getJSON('china-main-city/' + mapCode + '.json', function (data) {
			     if (data) {
			     	//定义一个dataMapValue存储指定位置的数据
			     	var dataMapValue = [];
			     	if(mapCode!=100000){
			     		var nameList = [];
			     		for(var i=0;i