bug fixed https://github.com/d2-projects/d2-admin/issues/54

Former-commit-id: 473236d97e89a6b454e5037e411bbadd83bbd743

src/layout/header-aside/components/tabs/index.vue

@@ -19,7 +19,6 @@
           @edit="handleTabsEdit"
           @contextmenu.native="handleContextmenu">
           <el-tab-pane
-            class="hello"
             v-for="(page, index) in pageOpenedList"
             :key="index"
             :label="page.meta.title || '未命名'"
@@ -100,6 +99,11 @@ export default {
      */
     handleContextmenu (event) {
       let target = event.target
+      // 解决 https://github.com/d2-projects/d2-admin/issues/54
+      const attribute = target.getAttribute('aria-controls')
+      if (attribute === null) {
+        return
+      }
       if (target.className.indexOf('el-tabs__item') > -1 || target.parentNode.className.indexOf('el-tabs__item') > -1) {
         event.preventDefault()
         event.stopPropagation()