JSFiddle - React, Tailwind, and code Playground

by olov

HTML

<div>
    <span class="foo"></span>
    <!-- comment -->
    text
</div>

JavaScript

var $div = jQuery("div"), 
    $nodes = $div.contents();

console.log( 
   ( !$div.hasClass("undefined") && "PASS" ) || "FAIL", 
    " - DIV DOES NOT have a class 'undefined'"
);
console.log( 
   ( $nodes.hasClass("foo") && "PASS" ) || "FAIL", 
    " - Elements DOES have a class 'foo'"
);
console.log( 
   ( !$nodes.hasClass("undefined") && "PASS" ) || "FAIL", 
    " - Elements DOES NOT have a class 'undefined'"
);