tab添加切换活跃的函数

packages/components/STab/index.vue

@@ -78,9 +78,21 @@ export default {
     setTimeout(() => {
       this.items[vm.current].$el.classList.add('activated')
     }, 100)
+    this.$emit('input', vm.current)
     this.scrollToActiveTab(vm.current, this.items[vm.current].$el.clientWidth)
   },
   methods: {
+    setTabActive (index) {
+      let vm = this
+      vm.items.forEach(item => {
+        item.$el.classList.remove('activated')
+      })
+      setTimeout(() => {
+        this.items[index].$el.classList.add('activated')
+      }, 100)
+      let width = this.items[index].$el.clientWidth
+      this.actived(index, width)
+    },
     actived (index, clientWidth) {
       this.activedIndex = index
       this.$emit('tabClick', index)