百度地图开发：批量增加折线、多边形覆盖物的封装函数

//绘制折线;
function drawLine(data) {
    //数据格式;
    //var data = ["116.399, 39.910;116.405, 39.920;116.423493, 39.907445", "116.405, 39.920;116.41248,39.927893"];
    var opts = {strokeColor: "blue", strokeWeight: 2, strokeOpacity: 0.5};
    for (var j = 0; j < data.length; j++) {
        var arr = data[j].split(";")
        var lineArr = [];
        for (var i = 0; i < arr.length; i++) {
            lineArr.push(new BMap.Point(arr[i].split(",")[0], arr[i].split(",")[1]))
        }
        //创建折线
        var polyline = new BMap.Polyline(lineArr, opts);
        //增加折线
        map.addOverlay(polyline);
    }
}

//绘制多边形;
function drawPolygon(arr) {
    map.clearOverlays();
    var ops = {
        strokeColor: "rgba(0,0,0,1)",
        fillColor: "rgba(0,0,0,1)",
        fillOpacity: 0.4,
        strokeOpacity: 0.1
    };
    //添加覆盖物;
    var ply = [];
    for (var i = 0; i < arr.length; i++) {
        ply[i] = new BMap.Polygon(arr[i], ops);
        map.addOverlay(ply[i]);
    }
}