发车tab初始化

src/pages/contractStart/start-list.vue

@@ -6,7 +6,7 @@
         <span>合同发车</span>
       </div>
     </h-header>
-    <Tab @getTabNum="getTabNum" />
+    <Tab :fatherTabNum = "tabNum" @getTabNum="getTabNum" />
     <div class="search">
       <input placeholder="请输入合同号/产品线/承租人名称" >
     </div>
@@ -61,7 +61,7 @@ export default {
   },
   data () {
     return {
-      tabNum: '',
+      tabNum: 0,
       contructs: [],
       lists: [],
       showList: [],

src/pages/contractStart/tab.vue

@@ -20,12 +20,11 @@ import sign from '@/assets/contractStart/1.png'
 import finish from '@/assets/contractStart/3.png'
 
 export default {
-  // props: {
-  //   'tabNum': {
-  //     type: Number,
-  //     default: 0,
-  //   },
-  // },
+  props: {
+    'fatherTabNum': {
+      type: Number,
+    },
+  },
   data () {
     return {
       tabNum: 0,
@@ -35,6 +34,13 @@ export default {
       finish: finish,
     }
   },
+  watch: {
+    'fatherTabNum': {
+      handler (newVal, oldVal) {
+        this.tabNum = newVal
+      },
+    },
+  },
   methods: {
     sendTabNum () {
       this.$emit('getTabNum', this.tabNum)