Search

DataTables' primary order method (the ordering feature) makes use of data that has been cached in memory rather than reading the data directly from the DOM every time an order is performed for performance reasons (reading from the DOM is inherently slow). However, there are times when you do actually want to read directly from the DOM, acknowledging that there will be a performance hit, for example when you have form elements in the table and the end user can alter the values. This configuration option is provided to allow plug-ins to provide this capability in DataTables. Please note that there are no columns.orderDataType plug-ins built into DataTables, they must be added separately. See the DataTables sorting plug-ins page for further information.

in the row), the columns.render option should be used.

between this option and columns.render) will be used by

as a complement to columns.render allowing modification of the

The first thing to say about this property is that generally you shouldn't need this! Having said that, it can be useful on rare occasions. When DataTables calculates the column widths to assign to each column, it finds the longest string in each column and then constructs a temporary table and reads the widths from that. The problem with this is that "mmm" is much wider then "iiii", but the latter is a longer string - thus the calculation can go wrong (doing it properly and putting it into an DOM object and measuring that is horribly slow!). Thus as a "work around" we provide this option. It will append its value to the text that is found to be the longest string for the column - i.e. padding.

Change the cell type created for the column - either TD cells or TH cells. This can be useful as TH cells have semantic meaning in the table body, allowing them to act as a header for a row (you may wish to add scope='row' to the TH elements using columns.createdCell option).

This option can be used to provide a custom string for the aria-label attribute used for column headers to provide enhanced accessibility for screenreaders. By default, DataTables will use an existing aria-label attribute or the column title (columns.title, or read from the document), but this option provides customisation for that. Please note that the value given here will have language.aria.sortAscending or language.aria.sortDescending appended to it if the column can be ordered by the end user, to give an indication to screenreader users that this is the case.

DataTables caches data for searching and ordering in order for those operations to run as quickly as possible when they are required. Sometimes it can be useful to get the data that DataTables has cached for these operations, for example when creating a select list to provide a column based filter. Cached data is not guaranteed to be available at any particular moment. If DataTables hasn't requested the data, it won't have been cached. This is particularly obvious when using the order option and a sort hasn't been performed on a column. Invalidation of data will also cause the cache to be removed. Please note that the order of the data in the returned array and which rows the data is obtained from (searched rows, visible rows etc) is controlled by the selector-modifier option of the column() selector used to get the selected column. Note that this method is primarily aimed at plug-in developers who require access to the internal data that DataTables has stored.

This example demonstrates the columns.searchPanes.show option for defining whether a column should show a pane or not. Here we have set the Name column to have a pane when it would normally be hidden due to the variance. Conversely, the Office column is hidden when it would normally be shown. The default value of columns.searchPanes.show is undefined so that as standard visibility will be determined by variance.

Buttons provides a number of options to control a DataTable including column visibility control. This example shows how FixedHeader will dynamically update as the column visibility changes.

way to get a column's settings which we define

want to combine the columns to a single datetime

a simple example using column-selector as a function. https://live.datatables.net/zegohiha/1/edit

be repopulated var currSearch = column.search(); if (currSearch) { // Use RegEx

the same number of columns, some are five, ten

Click on "Toggle second column's visiblity" button Result: Errors

additional information from other columns (IE red text saying

Ок In your example https://live.datatables.net/gatefabe/1/edit make invisible the Position and Office columns. Try dragging the resulting column and you will get an error Uncaught TypeError: dz is undefined

GET", "data": { "annee_inv_sel": annee_inv_sel } }, "columns": [ { "data": "rank" }, { "data": "annee_tempo"

text changes in the columns. and looking for a