HTML：
<!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 { margin: 0px; padding: 0px; height: 100%; } #container { margin: 100px auto; width: 1300px; height: 700px; } </style> </head> <body> <div id="container"></div> </body> </html>
JS：
<script type="text/javascript"> var map = new BMap.Map("container"); // 创建地图实例 var point = new BMap.Point(118.024381, 36.812327); // 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); //自定义控件 function ZoomControl() { this.defaultAnchor = BMAP_ANCHOR_TOP_LEFT; this.defaultOffest = new BMap.Control(); } //通过JavaScript的prototype属性继承于BMap.Control ZoomControl.prototype = new BMap.Control(); ZoomControl.prototype.initialize = function (map) { var div = document.createElement('div'); div.appendChild(document.createTextNode("放大2级")); div.style.cursor = "pointer"; div.style.border = "1px solid gray"; div.style.backgroundColor = "white"; div.onclick = function () { map.zoomTo(map.getZoom() + 2); }; // 添加DOM元素到地图中 map.getContainer().appendChild(div); // 将DOM元素返回 return div; } // 创建控件实例 var myZoomCtrl = new ZoomControl(); // 添加到地图当中 map.addControl(myZoomCtrl); </script>