js get value from form input

1var inputValue = document.getElementById("myTextInputID").value;
2

1// having form like this
2
3<form>
4  <div>
5  	<label for="number">Give me number</label>
6	<input type="number" id="number">
7  </div>
8  <div>
9    <button class="btn">Click</button>
10  </div>
11</form>
12
13// this is how u get a value (number)
14document.querySelector("form").addEventListener("submit", get_number);
15function get_number(e){
16    const n = document.getElementById("number").value;
17    console.log('n:', n)
18    e.preventDefault();
19}
20