仅针对特定列的 jQuery 数据表过滤 [英] jQuery DataTables Filtering for Specific Columns Only
问题描述
我使用 jQuery 插件 DataTables (http://datatables.net) 进行分页、搜索功能和过滤.
I am using the jQuery plugin DataTables (http://datatables.net) for pagination, search capabilities and filtering.
有过滤功能(http://datatables.net/release-datatables/examples/api/multi_filter_select.html) 为每列放置表单选择元素.
There is a filter function (http://datatables.net/release-datatables/examples/api/multi_filter_select.html) that places form select elements for each column.
我的问题是我不希望每列的过滤器选择元素,只有一些.我修改了原始代码,因为我只想要是/否过滤,并且我的第一列包含用户名.
My issue is that I don't want the filter select elements for every column, only some. I've modified the original code as I want Yes/No filtering only, and my first column contains user names.
如何从第一列中删除表单选择元素?
How do I remove the form select element from the first column?
JavaScript:
JavaScript:
<script type="text/javascript">
$(document).ready(function() {
(function($) {
/*
* Function: fnGetColumnData
* Purpose: Return an array of table values from a particular column.
* Returns: array string: 1d data array
* Inputs: object:oSettings - dataTable settings object. This is always the last argument past to the function
* int:iColumn - the id of the column to extract the data from
* bool:bUnique - optional - if set to false duplicated values are not filtered out
* bool:bFiltered - optional - if set to false all the table data is used (not only the filtered)
* bool:bIgnoreEmpty - optional - if set to false empty values are not filtered from the result array
* Author: Benedikt Forchhammer <b.forchhammer /AT mind2.de>
*/
$.fn.dataTableExt.oApi.fnGetColumnData = function ( oSettings, iColumn, bUnique, bFiltered, bIgnoreEmpty ) {
// check that we have a column id
if ( typeof iColumn == "undefined" ) return new Array();
// by default we only want unique data
if ( typeof bUnique == "undefined" ) bUnique = true;
// by default we do want to only look at filtered data
if ( typeof bFiltered == "undefined" ) bFiltered = true;
// by default we do not wany to include empty values
if ( typeof bIgnoreEmpty == "undefined" ) bIgnoreEmpty = true;
// list of rows which we're going to loop through
var aiRows;
// use only filtered rows
if (bFiltered == true) aiRows = oSettings.aiDisplay;
// use all rows
else aiRows = oSettings.aiDisplayMaster; // all row numbers
// set up data array
var asResultData = new Array();
for (var i=0,c=aiRows.length; i<c; i++) {
iRow = aiRows[i];
var aData = this.fnGetData(iRow);
var sValue = aData[iColumn];
// ignore empty values?
if (bIgnoreEmpty == true && sValue.length == 0) continue;
// ignore unique values?
else if (bUnique == true && jQuery.inArray(sValue, asResultData) > -1) continue;
// else push the value onto the result data array
else asResultData.push(sValue);
}
return asResultData;
}}(jQuery));
function fnCreateSelect( aData )
{
return '<select><option value="">Select</option><option value="Yes">Yes</option><option value="No">No</option></select>';
}
var oTable = $('#results').dataTable({
"sDom": '<<"filters"f><"clear"><"top"Tp><"clear">rt<"bottom"il>>',
"iDisplayLength": 5,
"sPaginationType": "full_numbers",
"bSortCellsTop": true,
"oLanguage": {
"sSearch": "Search all columns:"
},
"aoColumns": [
null,
{ "sType": "title-string" },
{ "sType": "title-string" },
{ "sType": "title-string" },
{ "sType": "title-string" }
],
"oTableTools": {
"sSwfPath": "../../scripts/TableTools/copy_cvs_xls_pdf.swf"
}
});
/* Add a select menu for each TH element in the table footer */
$("thead #filter td").each( function ( i ) {
this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(i) );
$('select', this).change( function () {
oTable.fnFilter( $(this).val(), i );
} );
} );
} );
</script>
HTML:
<table id="results" class="display">
<thead>
<tr id="labels">
<th>1</th>
<th>2</th>
<th>3</th>
<th>4</th>
<th>5?</th>
</tr>
<tr id="filter">
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5?</td>
</tr>
</thead>
<tbody>
...
</tbody>
</table>
推荐答案
您可以修改选择器以忽略第一个 You can modify your selector to ignore the first 如果您希望能够指定您想要过滤器的列索引,一种方法是执行类似的操作 If you wanted to be able to specify the column indexes for which you wanted a filter, one way would be to do something like 或者,如果您想通过将类 Or, if you wanted to control filters by adding a class 没有经过测试,但你明白了:) Not tested, but you get the idea :) 这篇关于仅针对特定列的 jQuery 数据表过滤的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋! 元素.每个匹配元素的索引应该比对应的列索引少1.
<td>
element. The index of each matched element should be 1 less than the corresponding column index./* Add a select menu for each TH element except the first in the table footer */
$("thead #filter td:not(:eq(0))").each( function ( i ) {
var columnIndex = i + 1;
this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(columnIndex) );
$('select', this).change( function () {
oTable.fnFilter( $(this).val(), columnIndex );
} );
});
var filterIndexes = [3, 4];
$('td', '#filter').each( function ( i ) {
if ($.inArray(i, filterIndexes) != -1) {
this.innerHTML = fnCreateSelect( oTable.fnGetColumnData(i) );
$('select', this).change( function () {
oTable.fnFilter( $(this).val(), i );
});
}
});
.filter
添加到要过滤其列的任何 元素来控制过滤器,您可以执行类似的操作
.filter
to any <th>
element whose column you wanted to filter, you could do something like$('th', '#labels').each( function(i) {
if ($(this).hasClass( 'filter' )) {
$('td', '#filter').eq(i)
.html( fnCreateSelect(oTable.fnGetColumnData(i)) )
.find('select')
.change(function () { oTable.fnFilter($(this).val(), i); });
}
});
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