JSFiddle - React, Tailwind, and code Playground

HTML

<div contenteditable="true">
    <p>Some text</p>
    <img id="myImg" src="http://contenteditable.com/lib/imgs/house.jpg"/>
</div>
<button id="myBtn">Get Result</button>
Result: <span id="res"></span>

JavaScript

$("#myImg").data("test",10);

$("#myBtn").click(function(){
    $("#res").html(0);
    $("#res").html($("#myImg").data("test"));
});