JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="texter"></textarea>

<button type="button" onclick="transferer()">transfer text</button>

<br><br>
    
<div id="diver"></div>

JavaScript

//This function transfers the text from the textarea to the div

function transferer() {

	var textbox = document.getElementById("texter") ;
	
    var captionDiv = document.getElementById("diver") ;
    
    captionDiv.innerHTML = textbox.value ;

    //Only allow content that contains <img class="emoji-class" src="something"> OR
    //<a href="">Hello</a> tags OR just plain text
    
    //Disable the ability to post any other HTML code
    
}