DataTable获取列数据

 1  get_spec_col_data: function(custom_options){
 2             var result = [];
 3             var options = {
 4                 table_id: ‘‘,
 5                 table_data_key: ‘grid‘,
 6                 column_index: 0,
 7                 selected: false,
 8                 select_type: ‘checkbox‘
 9             }
10             jQuery.extend(options, custom_options);
11             options.table_id = ‘#‘ + options.table_id;
12             var multi_data = false;
13             if (typeof (options.column_index) == undefined){
14                 return result;
15             } else if ( (options.column_index.constructor + ‘‘).match(/function Array\(\)/) != null ) {
16                 multi_data = true;
17             }
18             var data_arr = jQuery.data(jQuery(options.table_id)[0], options.table_data_key).fnGetData();
19             if (options.select_type == ‘radio‘) {
20                 var nodes_arr = jQuery(‘td:first input:radio‘,
21                     jQuery.data(jQuery(options.table_id)[0], options.table_data_key).fnGetNodes());
22             } else if (options.select_type == ‘checkbox‘) {
23                 var nodes_arr = jQuery(‘td:first input:checkbox‘,
24                     jQuery.data(jQuery(options.table_id)[0], options.table_data_key).fnGetNodes());
25             } else {
26                 return result;
27             }
28 
29             for (var i = 0; i < data_arr.length; i++) {
30                 if (!options.selected || (nodes_arr[i] && nodes_arr[i].checked)) {
31                     if (multi_data){
32                         var tmp = [];
33                         for (var j = 0; j < options.column_index.length; j++){
34                             tmp.push(data_arr[i][options.column_index[j]]);
35                         }
36                         result.push(tmp);
37                     }else{
38                         result.push(data_arr[i][options.column_index]);                        
39                     }
40                 }
41             }
42             
43             // Set hidden checked record.
44             if (options.selected) {
45                 // If the temporary data is existed (i.e. this method is called 
46                 // from fnDrawcallback), the temporary data, which is included 
47                 // checked hidden data and displayed record, should be used.
48                 var $table = $(options.table_id),
49                     target_data = esf_fw.table.get_tmp_raw_check_data_list($table);
50                 if (!target_data) {
51                     target_data = 
52                         esf_fw.table.get_hidden_raw_check_data($(options.table_id));
53                 }
54                 
55                 if (multi_data) {
56                     $.each(target_data, function(key, value) {
57                         var tmp = [];
58                         $.each(options.column_index, function(j, index){
59                             tmp.push(value[index]);
60                         });
61                         result.push(tmp);
62                     });
63                 } else {
64                     $.each(target_data, function(key, value) {
65                         result.push(value[options.column_index]);
66                     });
67                 }
68             
69             }
70             return result;
71         },