JSFiddle - React, Tailwind, and code Playground

HTML

<textarea name="comment_text" id="comment_text"  class="Post_Description_Text"></textarea>

CSS

.Post_Description_Text{ 
    width:500px;
}

JavaScript

$(".Post_Description_Text").keypress(function(event) {
       if (event.which == 13) {        
            alert("Function is Called on Enter");
         }

});