JSFiddle - React, Tailwind, and code Playground
by buicu
HTML
<div id="parentBox">
<div id="childBox">
<select>
<option>Opt1</option>
<option>Opt2</option>
<option>Opt3</option>
</select>
</div>
<div id="mesIn"></div>
<div id="mesOut"></div>
</div>
CSS
#childBox {
width:200px;
height:200px;
border:solid thin #900;}
JavaScript
var i = 0, y=0;
$('#parentBox').on({
mouseenter:function(e){
//console.log ('in: ');
i++; $('#mesIn').text('IN '+i);
},
mouseleave: function(e){
//console.log ('out: ');
y++; $('#mesOut').text('OUT '+y);
}
}, '#childBox');