自定义提示框，通过给要素涂层添加鼠标事件，将信息弹出来。
全部代码：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Feature Layer - display results as an InfoWindow onHover</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.25/dijit/themes/tundra/tundra.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.25/esri/css/esri.css">
<style>
html, body, #mapDiv {
padding:0;
margin:0;
height:100%;
}
#mapDiv {
position: relative;
}
#info {
background: #fff;
box-shadow: 0 0 5px #888;
left: 1em;
padding: 0.5em;
position: absolute;
top: 1em;
z-index: 40;
}
</style>
<script src="https://js.arcgis.com/3.25/"></script>
<script>
var map, dialog;
require([
"esri/map",
"esri/layers/FeatureLayer",
"esri/symbols/SimpleFillSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/renderers/SimpleRenderer",
"esri/graphic",
"esri/lang",
"esri/Color",
"dojo/number",
"dojo/dom-style",
"dijit/TooltipDialog",
"dijit/popup",
"dojo/domReady!"
], function (
Map, FeatureLayer,
SimpleFillSymbol, SimpleLineSymbol,
SimpleRenderer, Graphic, esriLang,
Color, number, domStyle,
TooltipDialog, dijitPopup
) {
map = new Map("mapDiv", {
basemap: "streets",
center: [-80.94, 33.646],
zoom: 8,
slider: false
});
var southCarolinaCounties = new FeatureLayer("https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/3", {
mode: FeatureLayer.MODE_SNAPSHOT,
outFields: ["NAME", "POP2000", "POP2007", "POP00_SQMI", "POP07_SQMI"]
});
southCarolinaCounties.setDefinitionExpression("STATE_NAME = 'South Carolina'");
var symbol = new SimpleFillSymbol(
SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_SOLID,
new Color([255, 255, 255, 0.35]),
1
),
new Color([125, 125, 125, 0.35])
);
southCarolinaCounties.setRenderer(new SimpleRenderer(symbol));
map.addLayer(southCarolinaCounties);
map.infoWindow.resize(245, 125);
dialog = new TooltipDialog({
id: "tooltipDialog",
style: "position: absolute; 250px; font: normal normal normal 10pt Helvetica;z-index:100"
});
dialog.startup();
//高亮显示
var highlightSymbol = new SimpleFillSymbol(
SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_SOLID,
new Color([255, 0, 0]), 3
),
new Color([125, 125, 125, 0.35])
);
//关闭信息框不在高亮显示c
map.on("load", function () {
map.graphics.enableMouseEvents();
map.graphics.on("mouse-out", closeDialog);
});
//为要素图层注册鼠标移入事件
southCarolinaCounties.on("mouse-over", function (evt) {
var t = "<b>${NAME}</b><hr><b>2000 人口数量: </b>${POP2000:NumberFormat}<br>"
+ "<b>2000 人口密度: </b>${POP00_SQMI:NumberFormat}<br>"
+ "<b>2007 人口密度:</b>${POP2007:NumberFormat}<br>"
+ "<b>2007 人口密度: </b>${POP07_SQMI:NumberFormat}";
//attributes中的字段进行替换
var content = esriLang.substitute(evt.graphic.attributes, t);
var highlightGraphic = new Graphic(evt.graphic.geometry, highlightSymbol);
map.graphics.add(highlightGraphic);
dialog.setContent(content);
domStyle.set(dialog.domNode, "opacity", 0.85);
dijitPopup.open({
popup: dialog,
x: evt.pageX,
y: evt.pageY
});
});
function closeDialog() {
map.graphics.clear();
dijitPopup.close(dialog);
}
});
</script>
</head>
<body class="tundra">
<div id="mapDiv">
<div id="info">
Hover over a county in South Carolina to get more information.
</div>
</div>
</body>
</html>