check if not checked vanila js

1<input type="checkbox" id="check">
2<a href="#" onclick="check()">click</a>
3<button onclick="check()">button</button>
4<script>
5 function check() {
6    		if (document.getElementById('check').checked) {
7            alert("checked");
8        } else {
9            alert("Not checked.");
10        }
11       
12    }
13
14</script>

1
2        
3            
4        
5     const cb = document.getElementById('accept');
6console.log(cb.checked);