Added functionality to allow only set of allowed words as tags

README.md

@@ -328,6 +328,9 @@ a little description and the default value:
 | **tags-input-name** | `String` | `"tag"` | Name to use as `name=""` in single tags' input. By default, all tags being passed as array like `tag[]`. |
 | **tags-limit** | `Integer` | `0` | Limit the number of tags that can be added, zero for no limit. |
 | **type-zone-class** | `String` | `"type-zone"` | Class of the type-zone. |
+| **allowed-words** | `Array` | `[]` | Array of allowed words. |
+| **allowed-words-callback** | `Function` | `window.alert` | Function to call when allowed words are not detected. |
+| **allowed-words-text** | `String` | `"Tag not allowed:"` | Basic text passed to when allowed words not detected `allowed-words-callback`. |
 
 ## Available Methods ##
 

tagging.js

@@ -84,7 +84,11 @@
             "tags-input-name": "tag",                       // Name to use as name="" in single tags (by default tag[])
             "tag-on-blur": true,                            // Add the current tag if user clicks away from type-zone
             "tags-limit": 0,                                // Limit the number of tags that can be added, zero means no limit
-            "type-zone-class": "type-zone"                 // Class of the type-zone
+            "type-zone-class": "type-zone",                 // Class of the type-zone
+            "allowed-words": [],                           // Array of allowed words
+            "allowed-words-callback": window.alert,       // Function to call when there is a allowed words
+            "allowed-words-text": "Tag not allowed:"      // Basic text passed to allowed-words callback
+
         },
 
         /**
@@ -99,7 +103,7 @@
 
             var $tag, l, self,
                 index, forbidden_words,
-                callback_f, callback_t;
+                callback_f, callback_t, allowed_words;
 
             // Caching this
             self = this;
@@ -115,6 +119,8 @@
             // Forbidden Words shortcut
             forbidden_words = self.config[ "forbidden-words" ];
 
+            allowed_words   = self.config[ "allowed-words"];
+
             // If no text is passed, take it as text of $type_zone and then empty it
             if ( ! text ) {
                 text = self.valInput();
@@ -153,6 +159,25 @@
                 }
             }
 
+            // Check if text is allowed or not
+            l = allowed_words.length;
+            while ( l-- ) {
+
+                //  looking for words which are allowed
+                if ( ! allowed_words.includes(text) ) {
+
+                    // Removing all text and ','
+                    self.emptyInput();
+
+                    // Renaiming
+                    callback_f = self.config[ "allowed-words-callback" ];
+                    callback_t = self.config[ "allowed-words-text" ];
+
+                    // Remove as a duplicate
+                    return self.throwError( callback_f, callback_t, text );
+                }
+            }
+
             // If no-duplicate is true, check that the text is not already present
             if ( self.config[ "no-duplicate" ] ) {