es6 improvements

src/editor/components/jgraduate/jQuery.jGraduate.js

@@ -127,7 +127,7 @@ function setAttrs (elem, attrs) {
   } else {
     Object.entries(attrs).forEach(([aname, val]) => {
       const prop = elem[aname]
-      if (prop && prop.constructor === 'SVGLength') {
+      if (prop?.constructor === 'SVGLength') {
         prop.baseVal.value = val
       } else {
         elem.setAttribute(aname, val)

src/editor/components/seMenu.js

@@ -112,19 +112,6 @@ export class SeMenu extends HTMLElement {
   set src (value) {
     this.setAttribute('src', value)
   }
-  /**
-   * @function connectedCallback
-   * @returns {void}
-   */
-  /* connectedCallback () {
-    this.$menu.addEventListener('openedchange', (e) => {
-      e.preventDefault();
-      const selectedItem = e?.detail?.closeResult;
-      if (selectedItem !== undefined && selectedItem?.id !== undefined) {
-        document.getElementById(selectedItem.id).click();
-      }
-    });
-  } */
 }
 
 // Register