JSFiddle - React, Tailwind, and code Playground

HTML

<input type="hidden" id="lower" name="lower" class="lower" value="lower" alt="lower" lang="en" />
<input type="hidden" id="UPPER" name="UPPER" class="UPPER" value="UPPER" alt="UPPER" lang="EN" />
<input type="hidden" id="MIXed" name="MIXed" class="MIXed" value="MIXed" alt="MIXed" lang="en-US" />
<ul id="results"></ul>

JavaScript

jQuery.each( "id name class value alt lang".split(" "), function( _, attr ) {
    var selector = "[" + attr + "*=e]";
    jQuery("#results").append( "<li>" + jQuery(selector).length +
        " results for " + selector );
});