Added debug: 'error', fixes

CHANGELOG.md

@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.6.0] - 2021-09-16
+### Added
+- ```debug: 'error'``` to output only failed initialization calls
+### Fixed
+- Error when ```debug``` mode is on
+- Spelling
+### Changed
+- Updated documentation
+- Updated dependencies
+
 ## [1.5.0] - 2020-10-13
 ### Added
 - `$.app.call(element, [settings], [pluginNames])` - added `plugins` optional argument to allow calling only a specific list of plugins

README.md

@@ -124,7 +124,7 @@ $(DIV_ELEMENT).pluginB({
 | -------- | ------- | ---------------------------------------- | -------- |
 | namespace    | String | Data attribute name using which list of plugin names are defined | ```"plugin"```     |
 | namespaceOptions    | Boolean | Pass to plugin only data from attributes starting with plugin name, eg. data-datepicker. If set to false all data is passed to plugin as ```options``` and without removing prefixes | ```true```     |
-| debug    | Boolean | Output all successful and failed plugin initialization calls to the console | ```false```     |
+| debug    | Boolean or String | Output all successful and failed plugin initialization calls to the console. If value is "error" then output only failed plugin initialization calls | ```false```     |
 
 
 #### namespaceOptions 

dist/jquery-app.js

@@ -17,6 +17,7 @@
     var REGEX_SPLIT = /(\s*,\s*|\s+)/;
     var REGEX_NOT_LOWERCASE = /[^a-z]/;
     var PROPERTY_NAME = 'jQueryAppData';
+    var LEVEL_ERROR = 'error';
 
     $.app = {
 
@@ -62,10 +63,10 @@
                     var options = $.app.getPluginOptions($element, plugin, settings);
                     $element[plugin](options);
 
-                    if (settings.debug) {
+                    if (settings.debug && settings.debug !== LEVEL_ERROR) {
                         console.log('$.app called plugin "%s" on %o with options %O', plugin, element, options);
                     }
-                } else if (settings.debug) {
+                } else if (settings.debug && settings.debug !== LEVEL_ERROR) {
                     console.log('$.app skipped plugin "%s" on %o because it already has been called previously', plugin, element);
                 }
             });
@@ -84,11 +85,11 @@
             var plugins = ($(element).data(settings.namespace) || '').split(REGEX_SPLIT);
 
             return plugins.filter(function (plugin) {
-                if (plugin) {
+                if (plugin.trim()) {
                     if (typeof $.fn[plugin] === 'function') {
                         return true;
                     } else if (settings.debug) {
-                        console.error('$.app coundn\'t find jQuery plugin "%s" declared on element %o', plugin, $element.get(0));
+                        console.error('$.app coundn\'t find jQuery plugin "%s" declared on element %o', plugin, $(element).get(0));
                     }
                 }