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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=EDGE" />
<title>ECharts China Map</title>
<style>
#china-map {
width: 1000px;
height: 800px;
position: absolute;
left: calc(50% - 500px);
top: 100px;
}
</style>
<script
type="text/javascript"
src="https://unpkg.com/echarts/dist/echarts.min.js"
></script>
<script
type="text/javascript"
src="https://unpkg.com/axios/dist/axios.min.js"
></script>
</head>
<body>
<button id="back" style="display: none">返回全国</button>
<div id="china-map"></div>
<script>
window.onload = function () {
const chart = echarts.init(document.querySelector("#china-map"));
const oBack = document.querySelector("#back");
// 地图缓存数据
let mapCaches = {};
// 点击进入下一级时，其父级的地图数据对象集合
let childParentMapObj;
function getAreaMap(areaCode, isFull) {
return axios
.get(
"http://42.192.232.58:3000/proxy/areas_v2/bound/" +
areaCode +
(isFull ? "_full" : "") +
".json?proxy_key=7f297416175d8b022098ded9548eb276"
)
.then(function (res) {
return Promise.resolve(res.data);
});
}
oBack.onclick = function () {
loadMap(childParentMapObj.map, childParentMapObj.name, {
code: childParentMapObj.code,
isFull: childParentMapObj.isFull,
});
if (childParentMapObj.map !== "china") {
childParentMapObj = childParentMapObj.parent;
oBack.innerHTML = "返回" + childParentMapObj.name;
} else {
childParentMapObj = null;
oBack.style.setProperty("display", "none");
}
};
loadMap("china", "中国", {
code: 100000,
isFull: true,
});
// 加载相应的地图
function loadMap(map, name, { code, isFull }) {
let promise = Promise.resolve();
if (!mapCaches[map]) {
promise = getAreaMap(code, isFull).then((mapData) => {
echarts.registerMap(map, mapData);
mapCaches[map] = mapData;
});
}
promise.then(() => {
const option = {
title: {
text: name,
left: "center",
},
series: [
{
name: name,
type: "map",
map,
roam: true, // 是否开启鼠标缩放和平移漫游
itemStyle: {
// 地图区域的多边形 图形样式
normal: {
// 是图形在默认状态下的样式
label: {
show: true, //是否显示标签
textStyle: {
color: "rgba(255,255,255,0)",
},
},
},
},
aspectScale: map === "china" ? 0.75 : 1,
top: "10%", //组件距离容器的距离
},
],
};
chart.clear();
chart.setOption(option);
chart.off("click");
chart.off("dblclick");
chart.on("click", function (param) {
if (param.name !== (childParentMapObj || {}).name) {
const mapData = mapCaches[map];
if (mapData) {
const mapInfo = mapData.features.find((m) => {
return m.properties.name === param.name;
});
const properties = mapInfo.properties;
loadMap(properties.adcode, properties.name, {
code: properties.adcode,
isFull: properties.level !== "district",
});
}
if (!childParentMapObj) {
oBack.style.setProperty("display", "block");
} else {
oBack.innerHTML = "返回" + name;
}
childParentMapObj = {
map,
name,
code,
isFull,
parent: childParentMapObj,
};
}
});
});
}
};
</script>
</body>
</html>