27 Feb 2025

Use jQuery to delete table columns (by column number) Here is a simple jQuery code snippet for deleting the entire table column according to the column number. It also deletes the table row title associated with the deleted column. // Delete the first column $('#table').find('td,th').first().remove(); // Delete the second column $('table tr').find('td:eq(1),th:eq(1)').remove(); // Delete column n (n represents column number) $('table tr').find('td:eq(n),th:eq(n)').remov

21 Nov 2024

How to Hide or Show a Specific Table Column by Its Name with jQuerySelecting elements by class using jQuery is straightforward. However, if you...

15 Jul 2025

The most common way to add new columns in MySQL is to use the ALTERTABLE...ADDCOLUMN statement. The basic syntax is: ALTERTABLE table name ADDCOLUMN new column name data type [constraint condition][position]; for example ALTERTABLEusersADDCOLUMNphoneVARCHAR(20); you can specify the location such as AFTERusername; add non-empty fields to set the default value, such as ALTERTABLEusersADDCOLUMNstatusTINYINTNOTNULLDEFAULT1; performance issues should be paid attention to when operating large data tables, and it is recommended to execute or use online D during low peak periods.

24 Oct 2024

This article presents a solution for pinning the first column in a Bootstrap 3 responsive table, making it visible even with horizontal scrolling. By leveraging jQuery and CSS, a clone of the first column is created and positioned absolutely, ensurin

04 Apr 2025

Implementing el-table table group drag and drop sorting in Vue2. Using el-table tables to implement group drag and drop sorting in Vue2 is a common requirement. Suppose we have a...

26 Jun 2025

Adding new columns in MySQLWorkbench can be achieved through graphical interfaces or SQL statements. The operation steps of graphical interfaces are: find the target table → right-click to select "AlterTable" → switch to the "Columns" tab page → fill in the new column information → click "Apply" to confirm the changes; the SQL statement format is ALTERTABLE table name ADDCOLUMN column name data type constraints, such as ALTERTABLEusersADDCOLUMNageINTAFTERname; when adding columns, you need to pay attention to the field order, default value settings, performance impact, and index definition.

24 Jun 2016

jquery table pagination

24 Oct 2024

In mobile table design, having a fixed first column enhances usability. This article presents a solution using jQuery and CSS to achieve this. A cloned table with only the first column is created and positioned absolutely with a fixed width, allowing

04 Nov 2024

Why Doesn't "display: table-column" Work in My CSS Layout?Given the HTML and CSS code provided, you might expect to see a layout with two columns...