객체의 id, name, class가져오기

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

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

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

//1. By id
var name_by_id = document.getElementById("test_id").getAttribute('name');
var class_by_id = document.getElementById('test_id').ClassName;

//2. By class
var name_by_class = document.getElementsByClassName('test_class')[0].getAttribute('name');
var class_by_class = document.getElementsByClassName('test_class')[0].id;

//3. By name
var id_by_name = document.getElementsByName('test_name')[0].id;
var class_by_name = document.getElementsByName('test_name')[0].className;

 

출처 : https://codethief.io/ko/get-id-name-and-class-values-using-javascript-jquery/