JSFiddle - React, Tailwind, and code Playground

by abdennour

HTML

<div class="old-teacher row">
   I am old teacher in Row
</div>
<div class="old-teacher col">
  I am Old Teacher in Col
</div>

<div class="new-teacher col">
 I am new Teacher in Col
</div>
<hr > 
<p>
 Does the 1st DIV has class "Col" has another class starts with old <span id="result"></span>
</p>
</p>

CSS

#result{
  color:red;
}

JavaScript

$.fn.hasClassStartsWith=function(prefix){
    return $(this).is(`[class^=${prefix}]`);
};
document.getElementById('result').innerHTML=$('.col:eq(0)').hasClassStartsWith('old')?"Yes":"No";