openLayers 3 之入门javascript
openlayer是web GIS客户端开发提供的javascript类库，也是开源框架，能够加载本地数据进行展现地图css
1.下载相关引用的js、css文件html
2.相似于echarts，建立一个容器div，并给予宽高java
3.编写openlayers初始化地图方法web
4.在网页上显示echarts
示例代码：框架
<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://openlayers.org/en/v4.5.0/css/ol.css" type="text/css">
<style>
.map {
height: 400px;
width: 100%;
}
</style>
<script src="https://openlayers.org/en/v4.5.0/build/ol.js" type="text/javascript"></script>
<title>OpenLayers example</title>
</head>
<body>
<h2>My Map</h2>
<div id="map" class="map"></div>
<script type="text/javascript">
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
})
],
view: new ol.View({
center: ol.proj.fromLonLat([37.41, 8.82]),
zoom: 4
})
});
</script>
</body>
</html>