[JavaScript] Using jQuery To Set Select2 Selected Value

1.set-select2-value.js

/** 
 * ht to @GaryJones for some refactoring
 */

// Lookup and store the select element to reference it throughout the code
var option, $select = jQuery( '#s2id_select2_element' );
 
/* Attempt to find the option element that belongs to the select element
 * identified by the above ID based on the current window's location.
 *
 * Grab [0] so that we get the actual element rather than a jQuery-wrapped
 * object.
 */
option = $select.find( 'option[value="' + window.location.href + '"]' )[0];
 
/* Check to see if the option for this URL exists. If so, then set the
 * select2's option value equal to that of the current page; otherwise,
 * nothing happens and the default value continues to display.
 */
if ( 'undefined' !== typeof option ) {
  $select.select2( 'val', window.location.href );
}