How to disable previous date using HTML5 datetime-local input?

I would simply like to prevent users from entering or disable the previous dates in input datetime-local , is there a way to do this?

Here is what I have done, unfortunately nothing happens on this code:

HTML:

<input type="datetime-local" class="form-control col-md-6" name="book" required>

Script:

<script>
var today = new Date().toISOString().split('T')[0];
document.getElementsByName("book")[0].setAttribute('min', today);
</script>

>Solution :

try this

var today = new Date().toISOString().slice(0, 16);

document.getElementsByName("book")[0].min = today;

<input type="datetime-local" class="form-control col-md-6" name="book" required>