Preparation code

<ul>
    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>

    <li class="someclass js-someclass" data-ui-role="someattrvalue">
        <a class="" href="#">
            <span class="module-bd">
                <img class="module-img" src="../some_file.jpg" alt="" />
            </span>
        </a>
    </li>
</ul>
 

Preparation code output

Test runner

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var slides = document.querySelectorAll('[data-ui-role="someattrvalue"]');

var slides = document.querySelectorAll('.js-someclass');

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