百度地图自定义控件

    <script>

        var map = new BMap.Map('allmap');

        var Bcenter = new BMap.Point(116.404,39.915);

        map.centerAndZoom(Bcenter,11);

        

        //自定义控件

        function staticControl(){

            this.defaultAnchor = BMAP_ANCHOR_TOP_LEFT;

            this.defaultOffset = new BMap.Size(10,10);

        }

        //继承Control的API

        staticControl.prototype = new BMap.Control();

        //初始化控件

        staticControl.prototype.initialize=function(map){

            var div = document.createElement('div');

            var e1 = document.createElement('input');

            e1.type = 'button';

            e1.value = '重置';

            e1.onclick=function(){

                statics();

            }

            div.appendChild(e1);

            var e2=document.createElement('input');

            e2.type = 'button';

            e2.value = '缩小';

            e2.onclick=function(){

                endStatics();

            }

            div.appendChild(e2);

            var e3 = document.createElement("input");

            e3.type = "button";

            e3.value = "放大";

            e3.onclick = function () {

               setStatics();

            }

            div.appendChild(e3);

            

            //添加DOM元素到地图中

            map.getContainer().appendChild(div);

            

            //返回DOM

            return div;

        }

        

        //创建控件实例

        var staticsCtrl = new staticControl();

        

        //添加到地图当中

        map.addControl(staticsCtrl);

        

        function statics(){

            map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);

        }

        function endStatics(){

            map.setZoom(map.getZoom()-2);

        }

        function setStatics(){

            map.setZoom(map.getZoom()+2)

        }

    </script>

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