api.jquery.com/entries/even-selector.xml at 2070dffb0ef6930859210e0e7004a1487e6dfd24 · jquery/api.jquery.com · GitHub

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            <entry type='selector'   name="even" return="" >
                <sample>:even</sample>
                 <signature><added>1.0</added> </signature>
                <desc>Selects even elements, zero-indexed.  See also <a href="/Selectors/odd">odd</a>.</desc>
                <longdesc><p>In particular, note that the <em>0-based indexing</em> means that, counter-intuitively, <code>:even</code> selects the first element, third element, and so on within the matched set.</p></longdesc>
                <example>
                    <desc>Finds even table rows, matching the first, third and so on (index 0, 2, 4 etc.).</desc>
                    <code><![CDATA[$("tr:even").css("background-color", "#bbbbff");]]></code>
                    <css><![CDATA[

  table {
    background:#eeeeee;
  }
  ]]></css>
                    <html><![CDATA[<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>]]></html>
                </example>
            </entry>