JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="contactMe" rows=4 cols=40 ></textarea>

JavaScript

var placeholderText = "Enter your comment...";

$(document).on("click","#contactMe",function(e){
 if($(this).val()=="" ||$(this).val() == placeholderText ){
  $(this).val("");
}
});

$(document).on("focusout","#contactMe",function(e){
    
    if($(this).val()==""){
	  $(this).val(placeholderText);
    }
    
});

$(document).ready(function(){
 $("#contactMe").val(placeholderText);
});