feat: use standard event prop behavior

- call .toLowerCase() on attribute props

examples/templating/index.js

@@ -6,7 +6,7 @@ export class Counter extends WebComponent {
   };
   get template() {
     return html`
-      <button onclick=${() => ++this.props.count} style="background-color: black; color: white;">
+      <button onClick=${() => ++this.props.count} style="background-color: black; color: white;">
         <span>${this.props.count}</span>
       </button>
     `;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "web-component-base",
-  "version": "2.0.0-beta.13",
+  "version": "2.0.0-beta.14",
   "description": "A zero-dependency, ~600 Bytes (minified & gzipped), JS base class for creating reactive custom elements easily",
   "type": "module",
   "exports": {

src/utils/create-element.js

@@ -8,7 +8,7 @@ export function createElement(tree) {
   } else {
     const el = document.createElement(tree.type);
     if (tree.props)
-        Object.keys(tree.props).forEach(prop => el[prop] = tree.props[prop])
+        Object.keys(tree.props).forEach(prop => el[prop.toLowerCase()] = tree.props[prop])
     tree.children?.forEach((child) => {
       const childEl = createElement(child);
       if (childEl) {