我有一个包含多列的表格,每列都有一个输入字段来搜索特定列。
但是对于基于数字的 4 列,我想要一个范围过滤器。这意味着,这 4 列将有两个输入字段,第一个是输入最小范围数,第二个是输入最大范围数。看一下引用图像(它只有 4 个基于数字的列中的 2 个列,其他 2 个在屏幕截图中不可见)。
现在我正尝试通过将我自己的搜索函数添加到数据表搜索函数数组来实现此功能,如文档中所述。 https://datatables.net/examples/plug-ins/range_filtering.html
但是搜索不起作用,或者我说它根本没有对 UI 进行任何更改。
这是代码-
// Call the dataTables jQuery plugin
$(document).ready(function() {
// Setup - add a text input to each footer cell
$('#dataTable thead tr').clone(true).appendTo('#dataTable thead');
$('#dataTable thead tr:eq(1) th').each( function (i) {
var title = $(this).text();
if(title==='clicks' || title==='impressions' || title==='ctr' || title==='position') {
$(this).html(`
<div class='d-flex'>
<input name=${title}_min id=${title}_min class='' type='number' min='0' placeholder='Min' style='width: 80px;'/>
<input name=${title}_max id=${title}_max class='ml-1' type='number' min='0' placeholder='Max' style='width: 80px;'/>
</div>
`);
var minInputValue = parseFloat($(`input[id=${title}_min]`, this).val()) || 0;
var maxInputValue = parseFloat($(`input[id=${title}_max]`, this).val()) || 0;
$.fn.dataTable.ext.search.push(function (settings, data, dataIndex) {
// logic to filter min and max values
var colVal = parseFloat(data[i]) || 0;
if (colVal >= minInputValue || colVal <= maxInputValue || minInputValue === 0 || maxInputValue === 0) {
return true;
}
return false;
});
$(`#${title}_min`, this).on('keyup change', function () {
minInputValue = parseFloat($(this).val()) || 0;
console.log('min', minInputValue);
dataTable.draw();
});
$(`#${title}_max`, this).on('keyup change', function () {
maxInputValue = parseFloat($(this).val()) || 0;
console.log('max', maxInputValue);
dataTable.draw();
});
} else {
$(this).html('<input type="text" placeholder="Search '+title+'" />');
$('input', this).on('keyup change', function () {
if (dataTable.column(i).search() !== this.value) {
dataTable.column(i).search(this.value).draw();
}
});
}
});
var dataTable = $('#dataTable').DataTable({
orderCellsTop: true,
paging: true,
scrollX: 400,
searching: true,
// lengthMenu: true,
dom: 'Blfrtip',
buttons: [
{ extend: 'csv', className: 'mb-2 btn btn-sm btn-info'},
{ extend: 'excel', className: 'mb-2 btn btn-sm btn-info' },
{ extend: 'pdf', className: 'mb-2 btn btn-sm btn-info' },
{ extend: 'print', className: 'mb-2 btn btn-sm btn-info' },
]
});
$('#dataTable_wrapper .dataTables_length').css({ display: 'inline-flex', 'margin-left': '20px' })
});
非常感谢您的帮助。
最佳答案
您的方法很接近,但您需要扩展过滤器函数中的逻辑:
$.fn.dataTable.ext.search.push(function (settings, data, dataIndex) {
// gather all the inputs we will need:
var clicks_val = parseFloat(data[2]) || 0.0;
var clicks_min = parseFloat($('#clicks_min').val()) || 0;
var clicks_max = parseFloat($('#clicks_max').val()) || Number.MAX_VALUE;
var impressions_val = parseFloat(data[3]) || 0.0;
var impressions_min = parseFloat($('#impressions_min').val()) || 0;
var impressions_max = parseFloat($('#impressions_max').val()) || Number.MAX_VALUE;
// evaluate to true to filter in a row, or false to filter it out:
var clicks = (clicks_val >= clicks_min && clicks_val <= clicks_max);
var impressions = (impressions_val >= impressions_min && impressions_val <= impressions_max);
// combine the above evaluations for overall row filtering:
return clicks && impressions;
});
在这里,我明确地收集了决定一行是否应该可见或被过滤掉所需的所有输入。
演示:
$(document).ready(function() {
$.fn.dataTable.ext.search.push(function (settings, data, dataIndex) {
// gather all the inputs we will need:
var clicks_val = parseFloat(data[2]) || 0.0;
var clicks_min = parseFloat($('#clicks_min').val()) || 0;
var clicks_max = parseFloat($('#clicks_max').val()) || Number.MAX_VALUE;
var impressions_val = parseFloat(data[3]) || 0.0;
var impressions_min = parseFloat($('#impressions_min').val()) || 0;
var impressions_max = parseFloat($('#impressions_max').val()) || Number.MAX_VALUE;
// evaluate to true to filter in a row, or false to filter it out:
var clicks = (clicks_val >= clicks_min && clicks_val <= clicks_max);
var impressions = (impressions_val >= impressions_min && impressions_val <= impressions_max);
// combine the above evaluations for overall row filtering:
return clicks && impressions;
});
// Setup - add a text input to each footer cell
$('#dataTable thead tr').clone(true).appendTo('#dataTable thead');
$('#dataTable thead tr:eq(1) th').each( function (i) {
var title = $(this).text();
if(title==='clicks' || title==='impressions' ) {
$(this).html(`
<div class='d-flex'>
<input name=${title}_min id=${title}_min class='' type='number' min='0' placeholder='Min' style='width: 80px;'/>
<input name=${title}_max id=${title}_max class='ml-1' type='number' min='0' placeholder='Max' style='width: 80px;'/>
</div>
`);
$(`#${title}_min`, this).on('keyup change', function () {
minInputValue = parseFloat($(this).val()) || 0;
dataTable.draw();
});
$(`#${title}_max`, this).on('keyup change', function () {
maxInputValue = parseFloat($(this).val()) || 0;
dataTable.draw();
});
} else {
$(this).html('<input type="text" placeholder="Search '+title+'" />');
$('input', this).on('keyup change', function () {
if (dataTable.column(i).search() !== this.value) {
dataTable.column(i).search(this.value).draw();
}
});
}
});
var dataTable = $('#dataTable').DataTable({
orderCellsTop: true,
paging: true,
scrollX: 400,
searching: true,
// lengthMenu: true,
dom: 'Blfrtip',
buttons: [
{ extend: 'csv', className: 'mb-2 btn btn-sm btn-info'},
{ extend: 'excel', className: 'mb-2 btn btn-sm btn-info' },
{ extend: 'pdf', className: 'mb-2 btn btn-sm btn-info' },
{ extend: 'print', className: 'mb-2 btn btn-sm btn-info' },
]
});
$('#dataTable_wrapper .dataTables_length').css({ display: 'inline-flex', 'margin-left': '20px' })
});
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Demo</title>
<script src="https://code.jquery.com/jquery-3.5.1.js"></script>
<script src="https://cdn.datatables.net/1.10.22/js/jquery.dataTables.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.22/css/jquery.dataTables.css">
<link rel="stylesheet" type="text/css" href="https://datatables.net/media/css/site-examples.css">
</head>
<body>
<div style="margin: 20px;">
<table id="dataTable" class="display dataTable cell-border" style="width:100%">
<thead>
<tr>
<th>page</th>
<th>query</th>
<th>clicks</th>
<th>impressions</th>
</tr>
</thead>
<tbody>
<tr>
<td>https://google.comn</td>
<td>foo bar</td>
<td>1.2</td>
<td>3.4</td>
</tr>
<tr>
<td>https://google.comn</td>
<td>foo bar</td>
<td>2.3</td>
<td>4.5</td>
</tr>
<tr>
<td>https://google.comn</td>
<td>foo bar</td>
<td>3.4</td>
<td>5.6</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
另请注意,我们不再需要这些:
var minInputValue = parseFloat($(`input[id=${title}_min]`, this).val()) || 0;
var maxInputValue = parseFloat($(`input[id=${title}_max]`, this).val()) || 0;
更新
这是一种使您的代码更“通用”的方法 - 我的意思是您不必为每个单元格值和每个相关的最小/最大值显式捕获单独的变量:
$.fn.dataTable.ext.search.push(function ( settings, searchData, index, rowData, counter ) {
// assume the row is going to be displayed:
var result = true;
// loop through the cells we want to check:
$('#dataTable thead tr:eq(0) th').each( function (colIdx) {
var title = $(this).text();
if ( $(`#${title}_min`).length ) {
// gather all the inputs we will need to check one cell in the current row:
var val = parseFloat(searchData[colIdx]) || 0.0;
var min = parseFloat($(`#${title}_min`).val()) || 0;
var max = parseFloat($(`#${title}_max`).val()) || Number.MAX_VALUE;
//console.log( min, val, max ); // just for testing
if (val < min || val > max) {
result = false; // any one failure means the row is filtered out
}
}
} );
return result;
});
这里只有 $.fn.dataTable.ext.search.push
函数发生了变化。其余代码保持不变。我试图注释代码以阐明它在做什么。我相信您可以进一步改进它,但这应该会给您一些想法。
关于javascript - 如何在数据表中添加带有输入字段的最小和最大范围过滤器?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/68619976/