datatables loading

sLoadingRecords与processing任选其一

var dataTable = $('#example').dataTable({
    oLanguage: {
         sLoadingRecords: '<img src="path/to/ajax-loader.gif">'
       },
    "processing": true,
    "columns": [
        { "data": "name" },
        { "data": "hr.position" },
        { "data": "contact.0" },
        { "data": "contact.1" },
        { "data": "hr.start_date" },
        { "data": "hr.salary" },
                {"data": "name",
                    "render":function (data,type,row,meta) {
                        return 'detail'+data;
                    }
                },
    ]
});