CHANGELOG.md

 
+<a name="v3.51.2"></a>
+## [v3.51.2] - 2023-06-19
+### Bug Fixes
+- [#122](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/122)
+
+
 <a name="v3.51.1"></a>
 ## [v3.51.1] - 2023-06-19
 ### Bug Fixes
@@ -656,6 +662,7 @@
 <a name="1.8.0"></a>
 ## 1.8.0 - 2021-08-15
 
+[v3.51.2]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.51.1...v3.51.2
 [v3.51.1]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.51.0...v3.51.1
 [v3.51.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.50.0...v3.51.0
 [v3.50.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.49.0...v3.50.0

application/package.json

 {
   "name": "@schukai/monster",
-  "version": "3.51.0",
+  "version": "3.51.1",
   "description": "Monster is a simple library for creating fast, robust and lightweight websites.",
   "keywords": [
     "framework",

application/source/dom/util/init-options-from-attributes.mjs

@@ -64,8 +64,12 @@ function initOptionsFromAttributes(element, options, mapping = {}, prefix = "dat
                 value = mapping[optionName](value);
             }
 
-            const typeOfOptionValue = typeof finder.getVia(optionName);
-            if (typeOfOptionValue === "boolean") {
+            const optionValue = finder.getVia(optionName);
+                
+            const typeOfOptionValue = typeof optionValue;
+            if (optionValue === null || optionValue === undefined) {
+                value = null;
+            } else if (typeOfOptionValue === "boolean") {
                 value = value === "true";
             } else if (typeOfOptionValue === "number") {
                 value = Number(value);

application/source/types/version.mjs

@@ -142,7 +142,7 @@ function getMonsterVersion() {
     }
 
     /** don't touch, replaced by make with package.json version */
-    monsterVersion = new Version("3.51.0");
+    monsterVersion = new Version("3.51.1");
 
     return monsterVersion;
 }

development/package.json

 {
   "name": "monster",
-  "version": "3.51.0",
+  "version": "3.51.1",
   "description": "monster",
   "repository": {
     "type": "git",

development/test/cases/monster.mjs

@@ -7,7 +7,7 @@ describe('Monster', function () {
         let monsterVersion
 
         /** don´t touch, replaced by make with package.json version */
-        monsterVersion = new Version("3.51.0")
+        monsterVersion = new Version("3.51.1")
 
         let m = getMonsterVersion();
 

release.json

-{"version":"3.51.1"}
+{"version":"3.51.2"}