How to Freeze Table Rows and Columns with JavaScript and CSS
Locking the first row and first column of a table when scrolling can be achieved using JavaScript and CSS, simulating the functionality of Excel's 'freeze panes'.
JavaScript Solution
One JavaScript solution is to create two separate tables:
- A fixed header table containing the first row and column headings.
- A scrollable body table containing the remaining table data.
Both tables are positioned absolutely using CSS, with the fixed header table positioned over the body table. When the page is scrolled, the body table moves independently while the fixed header remains fixed.
CSS Positioning
<code class="css">/* Fixed header table */ .fixed-header { position: absolute; top: 0; left: 0; z-index: 1; } /* Scrollable body table */ .scrollable-body { position: absolute; top: 0; left: 0; z-index: 0; }</code>
JavaScript Activation
<code class="javascript">// Create a table with the first row as the header const table = document.createElement('table'); const headerRow = table.createTHead().insertRow(); // Create the first column headings for (let i = 0; i <p>This solution provides a fully functional "freeze panes" effect for tables, ensuring that the first row and column remain visible during scrolling.</p></code>
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