   columns: &#39;.secondary&#39;
        }
    ]
} );</pre>
    </div>
</div>


<div class="reference_examples">
    <div class="reference_example">
        <div class="title">
            <p>
                直接初始化：使用jquery选择器来指定列
            </p>
        </div>
<pre class="brush:js;toolbar:false">new $.fn.dataTable.Buttons( table, {
    buttons: [
        {
            extend: &#39;columnToggle&#39;,
            columns: &#39;:gt(4)&#39;
        }
    ]
} );</pre>
    </div>
<