直接上代码，用户可以选择相应的颜色在地图上描多边形。
<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html{width: 100%;height: 100%;margin:0;font-family:"微软雅黑";}#allmap {width: 100%; height:500px; overflow: hidden;}#result {width:100%;font-size:12px;}dl,dt,dd,ul,li{margin:0;padding:0;list-style:none;}p{font-size:12px;}dt{font-size:14px;font-family:"微软雅黑";font-weight:bold;border-bottom:1px dotted #000;padding:5px 0 5px 5px;margin:5px 0;}dd{padding:5px 0 0 5px;}li{line-height:28px;}</style><script type="text/javascript" src="http://api./api?v=2.0&ak=你自己在百度申请的web客户单key"></script><!--加载鼠标绘制工具--><script type="text/javascript" src="http://api./library/DrawingManager/1.4/src/DrawingManager_min.js"></script><link rel="stylesheet" href="http://api./library/DrawingManager/1.4/src/DrawingManager_min.css" /><!--加载检索信息窗口--><script type="text/javascript" src="http://api./library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.js"></script><link rel="stylesheet" href="http://api./library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.css" /><title>鼠标绘制工具</title></head><body><div id="allmap" style="overflow:hidden;zoom:1;position:relative;"><div id="map" style="height:100%;-webkit-transition: all 0.5s ease-in-out;transition: all 0.5s ease-in-out;"></div></div><div id="result"><input type="button" value="获取绘制的覆盖物个数" onclick="alert(overlays.length)"/><input type="button" value="清除所有覆盖物" onclick="clearAll()"/><input type="button" value="红" onclick="a()"/><input type="button" value="蓝" onclick="b()"/><input type="button" value="黄" onclick="c()"/></div><script type="text/javascript">// 百度地图API功能var ys="red"var map = new BMap.Map('map');var poi = new BMap.Point(116.307852,40.057031);map.centerAndZoom(poi, 16);map.enableScrollWheelZoom(); var overlays = [];var overlaycomplete = function(e){if(overlays.length>0){alert('覆盖物只能标注一个')clearAll();} overlays.push(e.overlay);var path = e.overlay.getPath();//Array<Point> 返回多边型的点数组for(var i=0;i<path.length;i++){alert("lng:"+path[i].lng+"\n lat:"+path[i].lat)console.log("lng:"+path[i].lng+"\n lat:"+path[i].lat);}};var styleOptions = {strokeColor:ys, //边线颜色。fillColor:ys,//填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: 3, //边线的宽度，以像素为单位。strokeOpacity: 0.8, //边线透明度，取值范围0 - 1。fillOpacity: 0.6,//填充的透明度，取值范围0 - 1。strokeStyle: 'solid' //边线的样式，solid或dashed。}//实例化鼠标绘制工具var drawingManager = new BMapLib.DrawingManager(map, {isOpen: false, //是否开启绘制模式enableDrawingTool: true, //是否显示工具栏drawingToolOptions: {anchor: BMAP_ANCHOR_TOP_RIGHT, //位置offset: new BMap.Size(5, 5), //偏离值},circleOptions: styleOptions, //圆的样式polylineOptions: styleOptions, //线的样式polygonOptions: styleOptions, //多边形的样式rectangleOptions: styleOptions //矩形的样式}); //添加鼠标绘制工具监听事件，用于获取绘制结果drawingManager.addEventListener('overlaycomplete', overlaycomplete);function clearAll() {for(var i = 0; i < overlays.length; i++){map.removeOverlay(overlays[i]);}overlays.length = 0 }function a(){ys="red";var styleOptions = {strokeColor:ys, //边线颜色。fillColor:ys,//填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: 3, //边线的宽度，以像素为单位。strokeOpacity: 0.8, //边线透明度，取值范围0 - 1。fillOpacity: 0.6,//填充的透明度，取值范围0 - 1。strokeStyle: 'solid' //边线的样式，solid或dashed。}//实例化鼠标绘制工具drawingManager = new BMapLib.DrawingManager(map, {isOpen: false, //是否开启绘制模式enableDrawingTool: true, //是否显示工具栏drawingToolOptions: {anchor: BMAP_ANCHOR_TOP_RIGHT, //位置offset: new BMap.Size(5, 5), //偏离值},circleOptions: styleOptions, //圆的样式polylineOptions: styleOptions, //线的样式polygonOptions: styleOptions, //多边形的样式rectangleOptions: styleOptions //矩形的样式}); //添加鼠标绘制工具监听事件，用于获取绘制结果drawingManager.addEventListener('overlaycomplete', overlaycomplete);}function b(){ys="blue";var styleOptions = {strokeColor:ys, //边线颜色。fillColor:ys,//填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: 3, //边线的宽度，以像素为单位。strokeOpacity: 0.8, //边线透明度，取值范围0 - 1。fillOpacity: 0.6,//填充的透明度，取值范围0 - 1。strokeStyle: 'solid' //边线的样式，solid或dashed。}//实例化鼠标绘制工具drawingManager = new BMapLib.DrawingManager(map, {isOpen: false, //是否开启绘制模式enableDrawingTool: true, //是否显示工具栏drawingToolOptions: {anchor: BMAP_ANCHOR_TOP_RIGHT, //位置offset: new BMap.Size(5, 5), //偏离值},circleOptions: styleOptions, //圆的样式polylineOptions: styleOptions, //线的样式polygonOptions: styleOptions, //多边形的样式rectangleOptions: styleOptions //矩形的样式}); //添加鼠标绘制工具监听事件，用于获取绘制结果drawingManager.addEventListener('overlaycomplete', overlaycomplete);}function c(){ys="yellow";var styleOptions = {strokeColor:ys, //边线颜色。fillColor:ys,//填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: 3, //边线的宽度，以像素为单位。strokeOpacity: 0.8, //边线透明度，取值范围0 - 1。fillOpacity: 0.6,//填充的透明度，取值范围0 - 1。strokeStyle: 'solid' //边线的样式，solid或dashed。}//实例化鼠标绘制工具drawingManager = new BMapLib.DrawingManager(map, {isOpen: false, //是否开启绘制模式enableDrawingTool: true, //是否显示工具栏drawingToolOptions: {anchor: BMAP_ANCHOR_TOP_RIGHT, //位置offset: new BMap.Size(5, 5), //偏离值},circleOptions: styleOptions, //圆的样式polylineOptions: styleOptions, //线的样式polygonOptions: styleOptions, //多边形的样式rectangleOptions: styleOptions //矩形的样式}); //添加鼠标绘制工具监听事件，用于获取绘制结果drawingManager.addEventListener('overlaycomplete', overlaycomplete);}</script></body></html>
