项目需求:在地图上根据指定经纬度添加div
完整代码如下:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>Get started with graphics - 4.0</title>
<link rel="stylesheet" href="http://192.168.1.225:8089/arcgis_js_api/library/4.8/esri/css/main.css">
<script src="http://192.168.1.225:8089/arcgis_js_api/library/4.8/dojo/dojo.js"></script>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
position: absolute;
}
</style>
<script>
require([
"esri/Map",
"esri/views/MapView",
"esri/Graphic",
"esri/geometry/Point",
"esri/symbols/SimpleMarkerSymbol",
"dojo/domReady!"
], function (
Map,
MapView,
Graphic,
Point,
SimpleMarkerSymbol
) {
var map = new Map({
basemap: "streets"
});
var view = new MapView({
center: [116, 36],
container: "viewDiv",
map: map,
zoom: 3
});
var point = new Point({
longitude: 116,
latitude: 36
});
var markerSymbol = new SimpleMarkerSymbol({
color: [226, 119, 40],
outline: {
color: [255, 255, 255],
width: 2
}
});
var pointGraphic = new Graphic({
geometry: point,
symbol: markerSymbol
});
view.graphics.add(pointGraphic);
view.watch("extent", function (evt) {
var point = view.graphics.getItemAt(0);
if (point.geometry) {
// 关键代码 点的空间参考需与地图保持一致
point.geometry.spatialReference = view.spatialReference;
var screenPoint = view.toScreen(point.geometry);
console.log(screenPoint)
var test = document.getElementById("location");
test.style.top = Number(screenPoint.y) + 'px';
test.style.left = Number(screenPoint.x) + 'px';
}
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
<div id="location" style="position: absolute;z-index: 999;background:green;">demo</div>
</body>
</html>
效果图: