EasyUI获取所有选中行中的某一列的值

var PointIds=[];
for (var i = 0; i < wPoint_rows.length; i++) {
//PointIds.push(wPoint_rows[i]["T_PId"].toString());
PointIds.push(wPoint_rows[i].T_PId);
}
PointIds.join(',');
console.info(PointIds);