Chargify - Default component quantity to 1 and require quantity to be > 0

component-default-and-required

$(function () {

  var component1 = $("#component_allocated_quantity_XXXXX");

  component1.val(1);

  $("#subscription_submit").click(function(){
    if ( component1.val() <= 0 ) {
        component1.addClass("field-error");
        return false;
    }
  });

  component1.blur(function(){
    if ($(this).val() > 0 ) {
        $(this).removeClass("field-error");
    } else {
        $(this).addClass("field-error");
    }
  });
 
});