JSFiddle - React, Tailwind, and code Playground

HTML

<div id="hideme">
Hello Hideme
</div>
<input type='text' id="full_day"/>

JavaScript

$(document).ready(function(){
    $("#full_day").change(function(){

        if ($('#full_day').val() == 1) {   
            alert('hide');
            $("#hideme").hide("fast"); //Slide Down Effect
        } 
        else {
            $("#hideme").show("fast");    //Slide Up Effect
        }
    });


});