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Added each() function after once as mentioned in Jaypan's comment
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Rick B
Rick B
  • 558
  • 5
  • 8

Behaviors will be executed on every request, including AJAX requests.

you can use the once function to make sure it is only triggered once.

(function ($, Drupal) {
  Drupal.behaviors.mei_library_turn = {
    attach: function(context, settings) {

       $('main', context).once('mei_library_turn', ).each(function () {
          console.log('ready1');
       };)


      // There would be a lot more code in here, but I've stripped it all out to debug.

    }
  };

})(jQuery, Drupal, drupalSettings);

Behaviors will be executed on every request, including AJAX requests.

you can use the once function to make sure it is only triggered once.

(function ($, Drupal) {
  Drupal.behaviors.mei_library_turn = {
    attach: function(context, settings) {

       $('main', context).once('mei_library_turn', function() {
          console.log('ready1');
       };)


      // There would be a lot more code in here, but I've stripped it all out to debug.

    }
  };

})(jQuery, Drupal, drupalSettings);

Behaviors will be executed on every request, including AJAX requests.

you can use the once function to make sure it is only triggered once.

(function ($, Drupal) {
  Drupal.behaviors.mei_library_turn = {
    attach: function(context, settings) {

       $('main', context).once('mei_library_turn').each(function () {
          console.log('ready1');
       };)


      // There would be a lot more code in here, but I've stripped it all out to debug.

    }
  };

})(jQuery, Drupal, drupalSettings);
Source Link
Rick B
Rick B
  • 558
  • 5
  • 8

Behaviors will be executed on every request, including AJAX requests.

you can use the once function to make sure it is only triggered once.

(function ($, Drupal) {
  Drupal.behaviors.mei_library_turn = {
    attach: function(context, settings) {

       $('main', context).once('mei_library_turn', function() {
          console.log('ready1');
       };)


      // There would be a lot more code in here, but I've stripped it all out to debug.

    }
  };

})(jQuery, Drupal, drupalSettings);