Modernizr.load, example of loading in conditional js files with yepnope with correct path to the Drupal theme

script.js

Modernizr.load({
  test: Modernizr.touch,
  nope: Drupal.settings.basePath + Drupal.settings.customThemeSettings.pathToTheme + '/js/vendor/FILENAME.js',
  complete : function () {
    // Run the function after the scripts have downloaded
    doSomethingFunction();
  }
});

function doSomethingFunction() {
  // Code to go with conditional loading
}

template.php

function THEMENAME_preprocess_page(&$variables) {

  // Add custom settings
  drupal_add_js(array(
    'customThemeSettings' => array(
      'pathToTheme' => path_to_theme()
    )
  ), 'setting');
  
}