Code snippet provided for AJAX auto submit is wrong

Hello, thanks for the great module.

I noticed that the code snippet in the documentation to automatically submit the view filter is missing a crucial if statement. Here is the code as it stands:

Drupal.behaviors.bef_live_filter = function() {
    // Hide the apply button.
    $('.views-exposed-form input:submit').hide();
  
    // When the change event fires, run the submit handler
    $('.views-exposed-form input').change(function(event) {
      $(this).parents('form').submit();
    }); 
} 

The problem is that Drupal will call this behaviors function everytime there is loaded content on the site. This includes the first page load when the DOM is complete, and any module that loads in content thru AJAX. When views reloads the content of the view, this (and all over behavior functions) are called again. This results in the change handler being applied over and over again to all of the inputs, which will submit the function exponentially more and more as the user alters the filter.

The fix is to utilize the passed in 'context' argument, which indicates the context of the loaded content. In this case, we only need to execute the code once: when the complete DOM is loaded for the first time. Fixed:

Drupal.behaviors.bef_live_filter = function(context) {
  // Only execute on first document ready
  if (context.nodeName == '#document') {
    // Hide the apply button.
    $('.views-exposed-form input:submit').hide();
  
    // When the change event fires, run the submit handler
    $('.views-exposed-form input').change(function(event) {
      $(this).parents('form').submit();
    }); 
  }
}