如何正确引用复选框值?

CSHTML

<div style="border-style: solid;">
@Html.LabelFor(model => model.paios)
@Html.CheckBoxFor(model => model.paios)
</div>

JS

console.log($('#paios').checked); //UNDEFINED

$('#paios').change(function () {
    console.log(this.checked); //returns true or false
}