JSFiddle - React, Tailwind, and code Playground

HTML

<input id="googleMapCity"></input>
    <span id="AddGoogleMap">click me</span>

JavaScript

$("#AddGoogleMap").click(function () {      
    if($('#googleMapCity').val() === "") {
        alert("You need to fill out a city");
     } else {
     // do something
     }
});