[Baidu Map]MarkerManager扩展

关键代码：

/// <reference path="MarkerManager.js" />

BMapLib.MarkerManager.prototype.count = function () {

    /// <summary>

    /// 获取MarkerManager管理标记数量

    /// </summary>

    /// <returns type="">管理标记数量</returns>

    return this._numMarkers.length;

}

BMapLib.MarkerManager.prototype.find = function (properties, value) {

    /// <summary>

    ///查找标记 

    /// </summary>

    /// <param name="properties">键</param>

    /// <param name="value">值</param>

    /// <returns type="BMap.Marker">若没查找到，则返回NULL</returns>

    for (var i = 0; i < this._numMarkers.length; i++) {

        var marker = this._numMarkers[i];

        if (marker[properties] == value)

            return marker;

    }

}

BMapLib.MarkerManager.prototype.findAllInBounds = function (properties, value) {

    /// <summary>

    /// 查找符合条件的可视范围内标记

    /// </summary>

    /// <param name="properties">键</param>

    /// <param name="value">值</param>

    /// <returns type="Array">符合条件的数组</returns>

    var bounds = this._map.getBounds();

    var finded = new Array;

    for (var i = 0; i < this._numMarkers.length; i++) {

        var marker = this._numMarkers[i];

        if (bounds.containsPoint(marker.getPosition())) {

            if (marker[properties] == value) {

                finded.push(marker);

            }

        }

    }

    return finded;

}

BMapLib.MarkerManager.prototype.findVisualMarkers = function () {

    /// <summary>

    /// 查找可视范围内标记

    /// </summary>

    /// <returns type="Array">可视范围内标记数组</returns>

    var bounds = this._map.getBounds();

    var finded = new Array;

    for (var i = 0; i < this._numMarkers.length; i++) {

        var marker = this._numMarkers[i];

        if (bounds.containsPoint(marker.getPosition())) {

            finded.push(marker);

        }

    }

    return finded;

}

注：基于Baidu Map API 1.2

希望有所帮助，谢谢！