JSFiddle - React, Tailwind, and code Playground

HTML

<form name = "OrderForm" action = "process_order.php" onsubmit = "return CheckForm()" method = "post">
         <input type="text" id="Name"/>
         <input type="submit"/>
      </form>
<script>
                function CheckForm() {
                    var Name = document.getElementById("Name");
                    var bool = true;

                    if ((Name.value == "" ))  {
                         bool = false;
                    }

                    else if (!(fryyes || fryno)) {
                        bool = false;
                    }

                    if (!(bool)) {
                        alert("Please fill out all of the required fields.");
                        return false;
                    }
                    else {
                        alert("Your order is being submitted");
                        console.log("Submitted")
                    }

            };

</script>