JSFiddle - React, Tailwind, and code Playground

HTML

<form id="formName">
    <input type="submit" id="submitBtn" value="Submit" />
</form>

JavaScript

var a = 1;	
$("#formName").submit(function(e){
	e.preventDefault();
		$(document).on("click", "#submitBtn", function () {
				if(a != 1){
					alert("Fail!");
				}
				else{
					alert("Success");
                    return true;
				}
		});
	});