表是否在數據庫中，字段是否存在表中

/**
 * 表是否存在數據庫中
 */
function isTablename(tablename){
var flag = false;
$.ajaxSettings.async = false;
$.getJSON(basePath+"/tscstatusconfig/tscstatusconfigJsonAction!isTablename.do",{"entity.tablename":tablename},function(data){
if(data.total > 0)
flag = true;
});
return flag;
}
/**
 * 該字段是否存在於指定表中
 */
function isDatafield(tablename, datafield){
var flag = false;
$.ajaxSettings.async = false;
$.getJSON(basePath+"/tscstatusconfig/tscstatusconfigJsonAction!isDatafield.do",{"entity.tablename":tablename,"entity.datafield":datafield},function(data){
if(data.total > 0)
flag = true;
});
return flag;
}