JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript">
function doSomething(x) {
    $(x).html('<p style="background-color:red">BLABLA</p></br>');
}
</script>

<div onmouseover="$(this).html('<p>BLABLA</p></br>')"></div>

<div id="desirable" onmouseover="doSomething(this);"></div>

<div id="not_desirable" onmouseover="$(this).html('<p style="background-color:red>BLABLA</p></br></div>

CSS

div {
    height: 50px;
    background: blue;
    margin: 10px;
}