[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;
}

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

注：基于Baidu Map API 1.2

希望有所帮助，谢谢！