Reveal Extra Fields OnChange Select with jQuery

selectRevealOnChange.js

App.selectRevealChange = function(selector, val_text, reveal_container) {
  // console.log(selector, val_text, reveal_container);
  $(reveal_container).hide();
  $(selector).change(function () {
    // console.log($(selector+" option:selected").val(), '===', val_text );
    if ($(selector+" option:selected").val() === val_text) {
    	$(reveal_container).slideDown('fast');
    }
  });
}

jQuery(document).ready(function($) {
  App.selectRevealChange('#selector-name', 'value of option item', '#reveal-container');
});