<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Hello, World</title>
<style type="text/css">
html {
height: 100%
}
body {
height: 100%;
margin: 0px;
padding: 0px
}
#container {
height: 100%
}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=3.0&ak=1zsDuVP0lvV13GQwwklAx7Q0RVDvrpb9">
//v3.0版本的引用方式：src="http://api.map.baidu.com/api?v=3.0&ak=您的密钥"
</script>
</head>
<body>
<div id="container"></div>
<script type="text/javascript">
var map = new BMap.Map("container");
// 创建地图实例
var point = new BMap.Point(116.404, 39.915);
// 创建点坐标
map.centerAndZoom(point, 15);
// 初始化地图，设置中心点坐标和地图级别
map.enableScrollWheelZoom(true);
//开启鼠标滚轮缩放
</script>
</body>
</html>滚动鼠标可实现放大缩小
