:odd Selector

jQuery

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:odd Selector

Categories: Selectors > Basic Filter | Selectors > jQuery Extensions

odd selector

Description: Selects odd elements, zero-indexed. See also even.

  • version added: 1.0jQuery( ":odd" )

In particular, note that the 0-based indexing means that, counter-intuitively, :odd selects the second element, fourth element, and so on within the matched set.

Additional Notes:

  • Because :odd is a jQuery extension and not part of the CSS specification, queries using :odd cannot take advantage of the performance boost provided by the native DOM querySelectorAll() method. To achieve the best performance when using :odd to select elements, first select the elements using a pure CSS selector, then use .filter(":odd").
  • Selected elements are in the order of their appearance in the document.

Example:

Finds odd table rows, matching the second, fourth and so on (index 1, 3, 5 etc.).

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                                        <!DOCTYPE html>
                                      
                                    

                                  

                                  

                                    

                                      
                                        <html>
                                      
                                    

                                  

                                  

                                    

                                      
                                        <head>
                                      
                                    

                                  

                                  

                                    

                                        <style>
                                    

                                  

                                  

                                    

                                      table {
                                    

                                  

                                  

                                    

                                        background:#f3f7f5;
                                    

                                  

                                  

                                    

                                      
                                        }
                                      
                                    

                                  

                                  

                                    

                                      
                                        </style>
                                      
                                    

                                  

                                  

                                    

                                        <script src="http://code.jquery.com/jquery-latest.js"></script>
                                    

                                  

                                  

                                    

                                      
                                        </head>
                                      
                                    

                                  

                                  

                                    

                                      
                                        <body>
                                      
                                    

                                  

                                  

                                    

                                        <table border="1">
                                    

                                  

                                  

                                    

                                        <tr><td>Row with Index #0</td></tr>
                                    

                                  

                                  

                                    

                                        <tr><td>Row with Index #1</td></tr>
                                    

                                  

                                  

                                    

                                       
                                    

                                  

                                  

                                    

                                        <tr><td>Row with Index #2</td></tr>
                                    

                                  

                                  

                                    

                                        <tr><td>Row with Index #3</td></tr>
                                    

                                  

                                  

                                    

                                      
                                        </table>
                                      
                                    

                                  

                                  

                                    

                                      
                                        <script>
                                        $("tr:odd").css("background-color", "#bbbbff");
                                        </script>
                                      
                                    

                                  

                                  

                                    

                                       
                                    

                                  

                                  

                                    

                                      
                                        </body>
                                      
                                    

                                  

                                  

                                    

                                      
                                        </html>
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