固定顶部导航栏&窗口大小改变实时更新栏数

ruoyi-ui/src/components/TopNav/index.vue

@@ -95,21 +95,20 @@ export default {
       return activePath;
     },
   },
+  beforeMount() {
+    window.addEventListener('resize', this.setVisibleNumber)
+  },
+  beforeDestroy() {
+    window.removeEventListener('resize', this.setVisibleNumber)
+  },
   mounted() {
     this.setVisibleNumber();
   },
   methods: {
     // 根据宽度计算设置显示栏数
     setVisibleNumber() {
-      const width = document.body.getBoundingClientRect().width - 380;
-      const elWidth = this.$el.getBoundingClientRect().width;
-      const menuItemNodes = this.$el.children;
-      const menuWidth = Array.from(menuItemNodes).map(
-        (i) => i.getBoundingClientRect().width
-      );
-      this.visibleNumber = (
-        parseInt(width - elWidth) / parseInt(menuWidth)
-      ).toFixed(0);
+      const width = document.body.getBoundingClientRect().width / 3;
+      this.visibleNumber = parseInt(width / 85);
     },
     // 菜单选择事件
     handleSelect(key, keyPath) {

ruoyi-ui/src/layout/components/Navbar.vue

@@ -3,7 +3,7 @@
     <hamburger id="hamburger-container" :is-active="sidebar.opened" class="hamburger-container" @toggleClick="toggleSideBar" />
 
     <breadcrumb id="breadcrumb-container" class="breadcrumb-container" v-if="!topNav"/>
-    <top-nav id="topmenu-container" class="breadcrumb-container" v-if="topNav"/>
+    <top-nav id="topmenu-container" class="topmenu-container" v-if="topNav"/>
 
     <div class="right-menu">
       <template v-if="device!=='mobile'">
@@ -135,6 +135,11 @@ export default {
     float: left;
   }
 
+  .topmenu-container {
+    position: absolute;
+    left: 50px;
+  }
+
   .errLog-container {
     display: inline-block;
     vertical-align: top;