## 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.).

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 |
    <!doctype html><html lang="en"><head>  <meta charset="utf-8">  <title>odd demo</title>  <style>  table {    background: #f3f7f5;  }  </style>  <script src="https://code.jquery.com/jquery-1.10.2.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>

#### Demo: