jquery easy ui datagrid 全选、反选、清除

原文

 //全选
 function allselectRow(tableName) {
     $('#' + tableName).datagrid('selectAll');
 }
 //反选
 function unselectRow(tableName) {
     var s_rows = $.map($('#' + tableName).datagrid('getSelections'),
             function(n) {
                 return $('#' + tableName).datagrid('getRowIndex', n);
             });
     $('#' + tableName).datagrid('selectAll');
     $.each(s_rows, function(i, n) {
         $('#' + tableName).datagrid('unselectRow', n);
     });

 }
 //全清
 function clearSelections(tableName) {
     $('#' + tableName).datagrid('clearSelections');
 }
 var grid = $('#tt1');
         var options = grid.datagrid('getPager').data("pagination").options;
         //当前页数
         var currentPage = options.pageNumber;
         //总条数
         var total = options.total;
         //当前页记录数
         var rows = options.pageSize;
         //总页数
         var max = Math.ceil(total / options.pageSize);

 //全选选择
 function checkAll() {
 "white-space:pre">  $("input[name='menuid']").each(function() {
 "white-space:pre">      $(this).attr("checked", true);
 "white-space:pre">  });
 };
 //反向选择
 function reversal() {
 "white-space:pre">  $("input[name='menuid']").each(function() {
 "white-space:pre">      $(this).attr("checked", !this.checked);
 "white-space:pre">  });
 }
 //取消选择
 function clearCheck() {
 "white-space:pre">  $("input[name='menuid']").each(function() {
 "white-space:pre">      $(this).attr("checked", false);
 "white-space:pre">  });
 }