Function setError

Form Validation/script.js:68–74

(input,msg)

function setError(input,msg){
	const formControl=input.parentElement;
	const small=formControl.querySelector("small");
	small.innerText=msg;
	// add error class
	formControl.className="form-control error";
}
function setSuccess(input){
	const formControl=input.parentElement;
	formControl.className="form-control success";