JS常用方法

var objControl = document.getElementById(obj);
    var objType = $(obj).type;
    if (objType == "select-one")
    {
        return dataModel == undefined ? objControl.options[objControl.selectedIndex].value : objControl.options[objControl.selectedIndex].text;
    }
    else
    {
        var vValue = "";
        for (var i = 0; i < objControl.options.length; i++)
        {
            if (objControl.options[i].selected)
            {
                vValue += (dataModel == undefined ? objControl.options[i].value : objControl.options[i].text) + ","
            }
        }
        return vValue.DelLastWord(",");
    }