선택된 input[type="checkbox"] 값 가져오기

<div>
	<ul>
		<li>
			<input type="checkbox" value="btn1">
			<span>1번</span>
		</li>
		<li>
			<input type="checkbox" value="btn2">
			<span>2번</span>
		</li>
		<li>
			<input type="checkbox" value="btn3">
			<span>3번</span>
		</li>
	</ul>
</div>

<button>버튼</button>

<script>
	
	$("button").click(function(){
		
		$("input[type=checkbox]:checked").each(function(){
			const value = $(this).val();
			console.log(value);
		})
		
	})
</script>