jQuery로 form id, class, name 의 value 조회

jQuery를 이용한 id, class, name 별로 input value값 가져오기.

<div class="test_class" id="test_id" name="test_name"></div>

//1. By id
var name_by_id = $('#test_id').attr('name');
var class_by_id = $('#test_id').attr('class');
console.log(name_by_id);
console.log(class_by_id);

//2. By class
var name_by_class = $('.test_class').attr('name');
var id_by_class = $('.test_class').attr('id');
console.log(name_by_class);
console.log(id_by_class);

//3. By name
var id_by_name = $('[name="test_name"]').attr('id');
var class_by_name = $('[name="test_name"]').attr('class');
console.log(id_by_name);
console.log(class_by_name);