JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<div id="desktop">
    desktop
</div>
<div id="apps">
    apps
    <div class="stuff">
        stuff
    </div>
    <div class="stuff">
        stuff
    </div>
</div>

CSS

div { 
    padding: 10px;
    background: orange;
    border: 2px dashed red;
    margin: 4px;
}

div > div {
    background: yellow;
}

JavaScript

$("#desktop, #apps").mousemove(function(e){
     if( e.target === this ) {
        console.log( this.id );
     }
});