JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.jquery.com/jquery-latest.min.js"></script>

<input type="text" id="myField1" value="click me"/><br/>
<input type="text" id="myField2" value="then click me"/>
<span id="errorDiv"></span>

JavaScript

$(document).ready(function(){
    if($("#myField").val() != "someVal"){
        $("#errorDiv").insertAfter("#myField");
        $("#errorDiv").html("<br/>An error message");
    }
    
    $("input[type=text]").click(function(){
       $("#errorDiv").insertAfter($(this)); 
    });
});