Why is getselections in the DataGrid able to fetch only one row of values?

$ (' #Yptable '). DataGrid ({
Method: ' Get ', transfer format ' post ' and ' get '
Pagination:true,//pagination bar
Rownumbers:true,//Line number
Singleselect:false,
Loadmsg: ' ... In process, please wait ... ',
URL: '/ypinfo/getyplist ',
Toolbar: [{
Text: ' Delete ',//toolbar: Delete button
Iconcls: ' Icon-remove ',
Handler:function () {
Delete Event
var ids = [];
Get Selection row
var rows = $ (' #Yptable '). DataGrid (' Getselections ');
for (var i = 0; i < rows.length; i++) {
Ids.push (ROWS[I].TYMC);
}
Alert (Ids.join (': '));

}
}]
});

 

The problem is solved, if there is no IDfield attribute, getselections can only get the value of one row

http://jquery-easyui.wikidot.com/forum/t-280470

Why is getselections in the DataGrid able to fetch only one row of values?