make a input field required if radio is checked

Question

Can I somehow insert the required attribute into an input field only if a certain radio is checked?

I have an input field named \"ladder-meters\" that is not require

Answer 1

Tried F. Orvalho, didn't work for me, I had to use

$('#ladder').change(function () {
    if(this.checked) {
        $('#ladder-meters').prop('required', true);
    } else {
        $('#ladder-meters').prop('required', false);
    }
});

It could be usefull. Thx to F. Orvalho for the structure