jQuery - form submit 이벤트 함수, event.preventDefault()
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
// 폼 submit() 이벤트함수
// var name =
// var passwd =
// 경고창 name:passwd
// submit 기본기능을 못하게 막아줌
$('#my_frm').submit(function (event) {
var name = $('#name').val();
var passwd = $('#passwd').val();
alert(name + ' : ' + passwd);
if (name.length == 0 || passwd.length == 0) {
alert('이름과 패스워드를 모두 입력해주세요');
//return false;
event.preventDefault();
}
});
});
</script>
</head>
<body>
<form action="loginPro.jsp" id="my_frm">
이름: <input type="text" name="name" id="name"><br>
패스워드: <input type="password" name="passwd" id="passwd"><br>
<input type="submit" value="로그인">
</form>
</body>
</html>