Js操作Array数组

var _historyData = new Array();
function BindGoodsTab(goodsId, goodsName, goodsPrice) {
    var _html = "";
    var _data = {};
    _data["id"] = parseInt(goodsId);
    _data["GoodsName"] = goodsName;
    _data["GoodsNum"] = 1;
    _data["GoodsPrice"] = parseFloat(goodsPrice);
    var _len = _historyData.length;

    var _Ishave = false;
    var _flag = 0;
    if (_historyData.length > 0) {
        for (var i = 0; i < _len; i++) {
            var _hGid = parseInt(_historyData[i]["id"]);
            if (_data["id"] == _hGid) {
                _flag = i;
                _Ishave = true;
                break;
            }
        }
        console.log(_flag);
        if (!_Ishave) {
            _historyData.push(_data);
        }
        else {
            _historyData[_flag]["GoodsNum"] = parseInt(_historyData[_flag]["GoodsNum"]) + 1;
        }
    }
    else {
        _historyData.push(_data);
    }
    console.log(_historyData);
    $("#goodsList").html(_html);
}