高德地图自适应显示多个点标记
高德地图自适应显示多个点标记
doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
<title>自适应显示多个点标记title>
<link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css"/>
<style>
html, body, #container {
height: 100%;
width: 100%;
}
.amap-icon img{
width: 25px;
height: 34px;
}
style>
head>
<body>
<div id="container">div>
<div class="input-card">
<h4>地图自适应h4>
<input id="setFitView" type="button" class="btn" value="地图自适应显示" />
div>
<div class="info">
<div id="centerCoord">div>
<div id="tips">div>
div>
<script type="text/javascript"
src="https://webapi.amap.com/maps?v=1.4.15&key=您申请的key值">script>
<script type="text/javascript">
var map = new AMap.Map('container', {
resizeEnable: true,
center: [116.397428, 39.90923],
zoom: 13
});
map.clearMap(); // 清除地图覆盖物
var markers = [{
icon: '//a.amap.com/jsapi_demos/static/demo-center/icons/poi-marker-1.png',
position: [116.205467, 39.907761]
}, {
icon: '//a.amap.com/jsapi_demos/static/demo-center/icons/poi-marker-2.png',
position: [116.368904, 39.913423]
}, {
icon: '//a.amap.com/jsapi_demos/static/demo-center/icons/poi-marker-3.png',
position: [116.305467, 39.807761]
}];
// 添加一些分布不均的点到地图上,地图上添加三个点标记，作为参照
markers.forEach(function(marker) {
new AMap.Marker({
map: map,
icon: marker.icon,
position: [marker.position[0], marker.position[1]],
offset: new AMap.Pixel(-13, -30)
});
});
var center = map.getCenter();
var centerText = '当前中心点坐标：' + center.getLng() + ',' + center.getLat();
document.getElementById('centerCoord').innerHTML = centerText;
document.getElementById('tips').innerHTML = '成功添加三个点标记，其中有两个在当前地图视野外！';
// 添加事件监听, 使地图自适应显示到合适的范围
AMap.event.addDomListener(document.getElementById('setFitView'), 'click', function() {
var newCenter = map.setFitView();
document.getElementById('centerCoord').innerHTML = '当前中心点坐标：' + newCenter.getCenter();
document.getElementById('tips').innerHTML = '通过setFitView，地图自适应显示到合适的范围内,点标记已全部显示在视野中！';
});
script>
body>
html>