JSFiddle - React, Tailwind, and code Playground

HTML

<div id="some">
sddd    
</div>

CSS

#some
{
    width:300px;
    height:200px;
    background-color:#333;
}
#cool_div
{
    width:30px;
    height:20px;
    cursor:pointer;
    background-color:#FFF;
}

JavaScript

function myfoo (x)
{
    alert(x);
}

var $divToAppend = $("<div id='cool_div'>")
$divToAppend.on("click", function () {
    myfoo("hello");
});

$("#some").html($divToAppend);